12 best ywsnytemyej refrigerant leak detectors

Product description

The Kidde KN-COEG-3 AC powered, plug-in CO and explosive gas alarm protect you and your family from two deadly threats. The KN-COEG-3 includes 9V battery backup that provides protection during a power outage, when AC-only units cannot provide protection. By pressing the Peak Level Button you can see the peak CO level recorded by the alarm since it was last reset or unplugged. The continuous digital display shows you the level of carbon monoxide (if any) the unit is sensing as well as if gas is present. The gas sensor is a metal oxide sensor designed to detect natural gas (methane) or propane. Temperature range- 40 degree Fahrenheit to 100 degree Fahrenheit.

Protect your family from the dangers of carbon monoxide (CO), methane, and propane exposure with the Kidde KN-COEG-3 Nighthawk Plug-In Carbon Monoxide and Explosive Gas Alarm. The Nighthawk is an easy-to-install unit that provides reliable protection against the dangers of CO and explosive gas. The digital display shows if gas is present indicates CO levels in parts per million, allowing you to see if, how, and when levels change.

Advanced Technology in an Easy-to-Install, Plug-In Design

Designed for home use, the Kidde KN-COEG-3 Nighthawk is a UL-listed, A/C-powered, plug-in alarm that utilizes sophisticated electronic components and sensor technology to protect you and your family from the dangers of CO, methane, and propane exposure. It plugs directly into a standard A/C outlet and includes a 9-volt battery backup that provides continuous monitoring--even during power outages.

The Dangers of Carbon Monoxide, Methane, and Propane Exposure

The leading cause of accidental poisoning deaths in North America, carbon monoxide (CO) is often referred to as the silent killer because it's odorless, tasteless, and invisible. Carbon monoxide poisoning can come about via a number of sources, including everyday items and appliances in your home or office. And because symptoms of CO poisoning mimic the flu or other common illnesses it can often go undiagnosed.

Likewise, methane and propane gases are commonly used in homes for cooking, heating, and water heating. Although it happens rarely, gas leaks can sometimes occur inside the home, increasing the risk of fire or explosion.

Audible Alarm Pattern Alerts you to Elevated CO and Gas Levels

When placed on every level of your home, alarms like the KN-COEG-3 Nighthawk can help protect everyone in the house by giving you an unmistakable signal when gas levels have reached an unhealthy point. If unhealthy levels of CO are detected, the alarm will emit four quick audible beeps every five seconds until either levels decrease or the reset button is pressed. If methane gas or propane gas is detected, the alarm will emit beeps every other second with "GAS" shown in the display.

Easy-to-Read Digital Display Shows CO Levels

The KN-COEG-3 Nighthawk is preferred among traditional CO and explosive gas alarms because of its digital display. This display clearly shows levels of CO that the unit has detected and stored-- from 30 to 999 ppm--and it updates every 15 seconds to indicate any abrupt changes or alarming trends. The display also shows the peak CO level recorded by the alarm since it was last reset or unplugged. The continuous display also shows if gas is present.

LED Shows Sensor Status

With the KN-COEG-3 Nighthawk, you never have to wonder if the sensor is functioning properly. A blinking dot in the lower right-hand corner of the display denotes normal operation, so you can trust that it's working. In addition, you can test alarm function by pressing the test/reset button at any time to verify that the horn and electric circuitry are operating properly.

Convenient Mounting Options

The KN-COEG-3 Nighthawk has a low-profile design that makes it suitable for any room in your home. The detector can be plugged into any standard A/C outlet; it's plug can be snapped into the back of the unit and can be rotated so the alarm remains vertical, independent of whether the electrical socket is mounted vertically or horizontally. In addition, the alarm comes with a 6-foot extension cord, so the unit can be plugged into the wall outlet and then placed on a table or shelf. For the most thorough protection, place an alarm on every level of your home.

The UL-listed Kidde KN-COEG-3 Nighthawk has a seven-year life and is backed by a five-year limited warranty.

About Kidde: A UTC Fire and Security Brand

Renowned for global leadership in fire detection and suppression, Kidde provides solutions ranging from portable fire extinguishers to advanced industrial controls such as flame detection and explosion suppression systems. Kidde is a UTC Fire and Security brand, with a history that's rich with innovations, from the patent of the Chubb Detector Lock in 1818 to the development of the world's first wireless networked smoke detectors in 2004.

What's in the Box

Kidde KN-COEG-3 Nighthawk Carbon Monoxide and Explosive Gas Alarm, 9-volt battery, mounting hardware, and installation guide.

From the Manufacturer

The leading cause of accidental poisoning deaths in North America, Carbon Monoxide is odorless, tasteless and invisible. It is a silent killer. Kidde CO alarms include the most accurate sensing technology available, the patented Nighthawk electrochemical sensor. This unit is an AC powered, plug-in CO and explosive gas alarm that protects you and your family from two deadly threats. The 900-0113 includes 9V battery back up that provides protection during a power outage, when AC only units can not provide protection. By pressing the Peak Level Button you can see the peak CO level recorded by the alarm since it was last reset or unplugged. The continuous digital display shows you the level of carbon monoxide, if any. The unit is sensing as well as if gas is present. The gas sensor is a metal oxide sensor designed to detect natural gas , methane or propane. Install at least one CO alarm on every floor and in sleeping areas. Make sure CO alarms are at least 15 feet away from cooking or heating appliances to prevent false alarms. Replace CO alarms every 5 to 7 years to benefit from the latest technology upgrades.

• Protects you and your family from two deadly threats: Carbon monoxide and explosive gas.
• Sounder alarm – The KN-COEG-3 offers a loud 85-decibel pulsing alarm that will sound to alert you to a potential problem.
• Digital display - Displays the level of carbon monoxide the unit is sensing.
• Peak level memory - Recalls the highest CO concentration detected
• Test/reset button - Tests unit’s electronic circuitry operation and allows you to immediately silence the alarm
• Two alarms in one detects carbon monoxide and explosive gas
• Three convenient mounting options

User questions & answers

Question:	What is the sound level I need one for basement and need to hear on ground floor
Answer:	Dear cutomer, excuse that this prodcut Y301 can't detect hydrogen gas, it's mainly sensitive for methane and propane. thank you very much
Question:	is this an explosive gas and carbon monoxide detector? it only says "carbon monoxide detector" on the actual product
Answer:	Don't worry, it's normal, the large moisture change can affect the sensor performance, and may lead to false alarm, but the data on display only switch to 1,2 or 3, but won;t trigger the voice and light alarm. If the data become 5 or more than 5, voice and light alarm will be triggered. Thank you very much and best regards.
Question:	No manual included. Do I just plug it in and test it? What does it display if gas is detected? Thanks fellow Amazoners
Answer:	HI Niran, it's sensitive to methane and propane. We think it can't used to monitor and detect CO. thank you vey much
Question:	I smell natural gas in my house, and am wondering if that is the same as explosive gas? Will it detect natural gas
Answer:	Dear Karen, temporarily the Y301 doesn't get UL certification, it passed CE, FCC, EMC and RoHs. We are applying US ETL certification which is equivalent to UL certification. Thank you very much and best regards.

Product features

Plug-In Explosive Gas and Carbon Monoxide Detector with Battery Backup

The Kidde KN-COEG-3 AC powered, plug-in CO and explosive gas alarm protects you and your family from 2 deadly threats. The KN-COEG-3 includes 9-Volt battery back up that provides protection during a power outage, when AC-only units can not provide protection. By pressing the Peak Level Button you can see the peak CO level recorded by the alarm since it was last reset or unplugged. The continuous digital display shows you the level of carbon monoxide (if any) the unit is sensing as well as if gas is present. The gas sensor is a metal oxide sensor designed to detect natural gas (methane) or propane.

Carbon monoxide and gas detector plugs directly into wall outlet

Digital display updates CO level in PPM every 15 seconds

Loud 85 dBA pulsing alarm that will sound to alert you to a potential problem

• World's Longest Wireless Range: Powered by LoRa technology, the long-range yet low-power system offers the industry’s longest receiving range in the market (1/4 mile). Our long-range coverage enables its use in areas challenging for most residential Wi-Fi systems, such as basements, outdoor porch/patio areas, sheds, free-standing garages, even remote outbuildings on your property.
• Easy and Effective Property Protection: The YoLink wireless Water Sensor could not be easier to install; just place near or under the equipment you wish to monitor. Suggested uses are near or under sump pumps, toilets, water heaters, laundry machines, dishwashers, sinks, fish tanks and any other location subject to water leaks and flooding.
• Early-Warning Notifications: Receive real-time early-warning notifications (in the form of smartphone banner alerts, limited SMS/text messages, and emails) and protect your home and property from water damage; Due to the water-tight and submersible design of the original Water Leak Sensor, an internal sounder/siren would not be heard outside of the water-tight housing. For an audible alarm, consider our Siren Alarm or consider the Water Leak Sensor 2 which has a built-in sounder.
• Low-Power Means Longer Battery Life: Because of the low power consumption, device batteries may last 5 years or more (depending on application and device usage/activity), on standard AAA Alkaline batteries (lithium batteries not required)!
• From Simple to Super-Smart: After setting up your notification preferences, keep it simple and let the YoLink system do the rest and monitor your home and property for you. Or, utilize available advanced automation features, including 3rd-party integration with Alexa and IFTTT, to interact with other YoLink and 3rd-party smart devices. Limited only by your imagination!

User questions & answers

Question:	Is there any monthly or yearly fee to connect to a service
Answer:	It is hard to silence the alarm unless you make a minor modification in advance. Don't wait until the 130 dB siren is going before you work out how to disable the alarm. I've had it blaring in my ears while I frantically try to open the case to disconnect the battery, only to find that opening it is very difficult, even with the aid of a tool such as a flat-head screwdriver. What I've done since is filed down the locking tabs slightly, just enough that the plastic case still locks but is much easier to open when the alarm sounds, so that the battery can be disconnected. Then you can address the water leak in relative peace.
Question:	I don't see any rope sensors which is bad for covering areas like washers, fridge, and water heaters. Any rope solutions I'm unaware of with this
Answer:	The wire has no gauge markings- printed or imprinted. Comparing the wire side by side with a wire stripper, appears to be 18 gauge and it is definitely stranded copper. It is most assuredly no larger than 18 gauge so I would lean towards 18 to 20. I don’t know your application as to why you would need to extend the original length but I can tell you that the device is really loud when activated - if that helps you any.
Question:	How to make with Alexa? Using a routine
Answer:	Hello, thank you for your question. It is a constant, steady high pitch alarm sound. It will keep going until it is removed from water.
Question:	What are the dimensions of the water sensors? (Inches and centimeters
Answer:	Hello, they use 9V battery. Batteries are included.

Product features

YoLink Smart Water Leak Sensor

• Works with Alexa - Receive voice announcements of changes detected by sensors in your home
• Works with IFTTT – Trigger Customer Automations Using IFTTT
• Real Time Status – Check the real-time water/moisture status of the sensor via the YoLink App
• Battery Status – Receive low-battery alerts before batteries need to be replaced
• YoLink Control – Trigger an action by select YoLink devices without reliance on the internet
• Automation – Easily setup scheduled and automatic actions and responses with the YoLink App as well as with 3rd-party integration platforms such as Alexa and IFTTT

Independent System

“YoLink” is a proprietary wireless technology provided by YoSmart. which is based on the Semtech's LoRa wireless technology combined with the YoSmart smart home/buiding protocol, to provide the most advanced smart home/buidling devices solution. Compared to WIFI, Bluetooth, ZigBee, Z-Wave, and other smart home protocols, it has the advantages of low-power consumption, long-distance coverage (wall penetration), and anti-interference. It is the first smart building/home protocol that can be very easily setup and is a very low cost but creates a reliable, robust and more secure IoT network.

No Internet Control

Turn on/off the valve even without internet.

Note: YoLink Valve sold separately!

Whole House Solution

Home Automation - Build "IF THIS THEN THAT" rules between YoLink Water Leak Sensor and YoLink Smart Plug (sold separately) , making life convenient and secure. With YoLink App, you can set smart scenes, automation and YoLink Control between devices and devices, sharing devices with family members and making your house smart. Let's start your own whole house smart home system with YoLink.

5X Long Lasting

Powered by 2*AAA batteries, YoLink Leak Sensor features with 5 years battery life compared to 1 year of other top brands.

Step 1, Download App

1, Download YoLink App from Apple store or Google play

2, Create Account and Login

Requirements:

Smartphone or tablet running iOS 9 or higher, Android 4.4 or higher

Step 2, Add Device

Scan the QR code on YoLink Hub and Water Leak Sensors to add into YoLink App.

You can customize their name, set their room, and add to/remove from “Favorite”.

Step 3, Connect to Internet

Power up the Hub using the supplied power adapter, connect to your Wi-Fi network (or directly to your router, using the included patch cord), and your YoLink Hub will connect to the App.

Step 4, Connect to Cloud

Press "Set" button on Water Leak Sensor once to connect it to YoLink Hub and Cloud.

• Home gas detector suitable for detecting LPG(Methane), natural gas, coal gas, gas fuel, artificial gas, liquefied petroleum gas, liquefied natural gas etc.
• Gas Detector offers Voice Notification and a digital readout of the GAS concentration.When gas leak concentration reaches presetting level, the alarm provides a visual and audible signal. 85dB alarm sound, reduce the risk of gas explosion and protect your family's life and property safety.
• Gas leak detector adopts Easy-to-install Design, can be used by plugging directly into the power socket to detect leaked gas.
• This product can be used as independent family alarm equipment, and also can be used as front detector of alarm system. Widely Used for Restaurant, Hospital,Hotel, Oil Factory,Garage, Gas Station etc.
• The system warm-up time is about 2-3 minutes. During this time period, the gas test will not work. You need to wait for the display to show 0 (the system enters the working state) before it can be tested normally.Gas leak detector adopts Easy-to-install Design, can be used by plugging directly into the power socket to detect leaked gas.

User questions & answers

Question:	Can it be used outdoors
Answer:	To be totally honest, I was very disappointed in this product. It did not work well for me with very coarse hair. I would have returned it but it was not worth the hassle for such a small price.
Question:	Does this specific unit detect radon
Answer:	I do not have the elite model but I believe it has a revolving head. I don't see a need for this feature as the lumina does a very efficient job of removing unwanted facial hair.
Question:	Is this alarm listed by Underwriter Laboratories
Answer:	YES SHOULD WORK ON SIDE BURNS
Question:	Does a carbon monoxide tester also detect propane
Answer:	My wife uses it on her entire face and chin whenever she has hairs that need to be trimmed. No stubbles seem to ever appear after use. So I would say it does an outstanding job. She is always pleased. Hope this helps you.

Product features

Natural Gas Propane Detector, Gas Leak Detection, Home Gas Alarm, Plug-in Digital Alarmer, High Sensitivity LPG LNG Coal Natural Gas Leak Detection

1. First, determine whether the gas to be detected is lighter or heavier than air
2. Gas that is heavier than air: liquefied petroleum gas, etc
3. Gas that is lighter than air: natural gas, artificial gas, biogas, etc.
4. When detecting gas heavier than air: Install natural gas alarm detector 0.3 m above the ground, within 1.5 m from the air source radius
5. When detecting gas lighter than air: Install natural gas alarm detector 0.3-1.0 m below the ceiling and within 1.5 m from the air source radius

Product description

Affordable price, simple operation, and reliable performance make TEK-Mate the refrigerant leak detector of choice for thousands of technicians. See for yourself why TEK-Mate is the #1 selling refrigerant leak detector in the HVAC/R market.

• Sensitivity of 0.25 oz./year (7 g/year)
• Detects all CFCs, HCFCs, HFCs, and HFOs. A2L Certified
• Proven heated diode sensor for reliable leak checking
• Sensor Life: 100 hours
• No false alarms from soap solutions
• Automatic background adjustment ("zeroing")
• Runs on two D-cell alkaline batteries

User questions & answers

Question:	Does it detect r507 gas
Answer:	have not used 507 but understand it is a hfc blend so should work fine. have used it with 502 a few times with good results.
Question:	Does this have a built in pump
Answer:	Yes it has a pump. I used it today, found the leak. Im very happy with this leak detector.
Question:	Would this be a good tool for the automotive technician for r134a or is there a different tool suitable for the automotive technician for r134a
Answer:	Perfect for 134a Any cfc hfc or hcfc. 134a is a hfc refrigerant. I have had many leak detectors over the years and found this to be the best, so far
Question:	how much does a replacement sensor cost
Answer:	the sensor is already installed

Product description

The “Raptor” refrigerant leak detector by Mastercool offers an accurate and reliable solution to electronic and UV leak detection. This unit offers state-of-the-art features and micro-processing technology while the design sensor delivers a precise and instant response. The ultra-bright UV light built into the end of the probe allows for both electronic and UV leak detection of even the hardest to find leaks. This unit is packaged in a custom molded case with UV glasses, 2 “C” batteries and sensor tip.

• DIGITAL SIGNAL MICRO-PROCESSOR provides precise and instant responses
• SENSITIVITY LEVEL ADJUSTMENT with 6 levels of sensitivity and 15 levels of detection
• STATE OF THE ART FEATURES including visual leak level indicator, keypad control, mute and reset function
• VARIABLE FREQUENCY audible alarm
• UV/BLUE LED LIGHT is built into the end of the unit to provide ultra bright UV leak detection
• Fit type: Universal Fit

User questions & answers

Question:	Does the work with 1234yf
Answer:	Yes. They are an amber/yellow color

Product features

Raptor" Refrigerant Leak Detector with Ultra Violet Blue Light

The "Raptor" refrigerant leak detector with UV blue light offers state-of-the-art features and micro-processing technology while the design sensor delivers an accurate and instantaneous response. An ultra bright UV light is built into the end of the probe allowing for both electronic and UV leak detection of even the toughest leaks.

Packaged in a blow molded case with UV glasses, 2 “C” batteries and sensor tip.

State-Of-The-Art Features

The sensor of the "Raptor" refrigerant leak detector can detect all refrigerants (CFC's, HCFC's, HFC's and blends) with a life of approximately 20 hours. The six levels of sensitivity with 15 levels of detection can find leaks as small as 1/10 oz per year.

Ultra Bright UV Light

Ultra bright UV light is built into the end of the probe allowing for both electronic and UV leak detection of even the toughest leaks.

Turn OFF System Before Inspection

Make sure that the air conditioning/refrigeration system is turned OFF before inspection. A sufficient amount of refrigerant must be present in the system. A minimum gauge pressure of 50 PSI at ambient temperature of 60˚ and above with the system OFF is required for efficient leak detection.

Working With The Flexible Probe

For the best leak detection results, the probe should be moved across the leak detection area at the rate of 1” - 2” per second (25 - 50mm per second) and held 1/4” (5mm) away from the surface. An increase in the alarm rate will indicate a leak. To confirm the correct leak location, blow shop air around the suspected leak area, move the probe into fresh air, reset and reinspect.

High Humidity and Erratic Alarm

When inspecting in contaminated or high humidity areas, erratic alarming may occur. For best results in these areas, allow the unit to adjust to the existing environment before inspecting. Pressing the RESET button will adjust the unit to an existing environment.

Product description

The Corentium Home by Airthings radon detector is a state-of-the-art measuring instrument that combines ease of use and performance. The Corentium Home by Airthings radon gas detector allows you to take a reading of the radon levels and its LCD screen displays the average daily, weekly and long term concentrations. Powered by 3 standard AAA batteries, the radon monitor makes it easy to take measurements from one room to another in order to get an overview of the concentrations of radon in a home, workplace, school, a daycare centre or any other location. The Corentium Home by Airthings radon detector is also an essential tool to use when performing property inspections or when checking the operation of a radon mitigation system. The internal architecture of the Corentium Home by Airthings radon monitor comes from advanced technology normally reserved for commercial-type detectors. Particular attention has been paid to the quality and protection of the internal components, allowing the use of algorithms for signal analysis that are more sophisticated. The Corentium Home by Airthings radon gas detector quickly adapts to its environment and eliminates inaccuracies related to external factors, allowing it to obtain the best accuracy in its niche. The Corentium Home by Airthings radon monitor is guaranteed for one year and in normal home use, it requires no annual calibrations throughout its useful life, estimated at over 10 years.

• FIRST OF ITS KIND: The first battery-operated, digital radon detector. Monitor your home without the need for an outlet.
• LONG TERM MONITORING: Monitor for cancer-causing radon gas. Long term monitoring is necessary as radon levels fluctuate daily.
• BE IN CONTROL: Take action if your radon levels are high. Know if your improvements have worked by checking the short term, on-screen readings.
• RADON REPORT: Generate a radon self-inspection report easily, whenever you need it.
• NO LAB FEES: Unlike a traditional radon gas test kit, receive your first indication of radon levels within 24 hours and no lab fees, ever
• FAST RESULTS: On-screen results show both long and short term readings, for a quick overview of your radon levels.
• What you get: Airthings Corentium Home, 3 AAA batteries, Quick Start Guide, Airthings 12-months & Customer Support access via email or live chat directly from the Airthings App or website

User questions & answers

Question:	I see there are air holes in the back, so if it is placed against a surface, won't it impede the airflow into the detector
Answer:	According to the company's website, the unit should be placed on its back (display facing upwards), on a flat surface, at breathing-level height, and away from windows, doors, air vents, etc. See https://support.airthings.com/hc/en-us/articles/115003370189-How-do-I-place-my-Home-radon-detector-to-obtain-correct-measurements- Or as their FAQ answer states: "You can just lay it flat on a table or a shelf. The air flows into the Radon chamber as usual." https://support.airthings.com/hc/en-us/articles/115001097069-Can-I-just-lay-the-unit-flat-on-its-back-side-
Question:	what is the shortest amount of time you can do a test with this device? a home inspection last only a few hours..will it have to be left over night
Answer:	Professional testers need to be used for a 48 hour test. For this home unit, it should run at least a week to be somewhat accurate. A month would be better. It will have a 20% deviation for a 48 hour test. 7 day test should be around 10% deviation and 2 months around 5%. Right now, mine has about a 30% deviation compared against professional 48 hour testers. I'm contacting support now for help. I've owned it for about 6 months.
Question:	Are we positive the readings are accurate? I have now tested the first floor of the house and am getting a reading of 7.5 pCi/l
Answer:	We have two older (15+ years) Safety Siren meters that read 2.3 & 2.4 for both long and short readings and seem stuck even after a reset/retest in our radon mitigated basement. The new Airthings 223 started a little over 2.0 and slowly dropped to 1.8. Yesterday I resealed the sump pit covers to the floor and the Airthings 223 1-day average already (
Question:	how often does the tester need to be calibrated and how much does it cost to calibrate
Answer:	My answer has nothing to do with radon concentration in the tested environment, but incorrect terminology being used on this discussion thread. Resetting the radon sensing instrumentation means system initialization to factory calibration, as the unit is not user calibrate able. Calibration implied by this question is to a standard, and it must have been done with the prototype designs when tested against known radon concentrations in chambers...using perhaps master instrumentation. I think this device can give you values within some level of confidence like 95%...but the measure value of any unit like this is not to be taken with 100% confidence.

Product features

Long and short term trends help you stay on top of radon levels.

Monitor your air quality.

Radon gas is in the air all around us and levels fluctuate daily. The good news is that a digital radon detector warns you when levels are getting high. Simple fixes around the home can dramatically improve your air such as increasing ventilation or sealing cracks in floors or even installing radon mitigation systems and radon fans.

Continuous, long-term monitoring

21,000 deaths are attributed annually to radon gas in the US alone. This and other radon side effects can be prevented by monitoring.

Remember to monitor for radon daily so that you can make small adjustments to improve the quality of your air.

Odorless, colorless, tasteless

Radon is a naturally occurring, radioactive gas that comes up from the ground and can accumulate to unsafe levels in the home. It is odorless, colorless and tasteless.

Lungforce - American Lung Association

Airthings supports lung health and lung cancer research by donating USD1 to the American Lung Association for each radon measuring Airthings product sold by Amazon. (Through Jan 31, 2021, up to 25K.)

Quick.

See the first indication of your radon levels within 24 hours. Nothing to send to a lab and no fees. Accuracy improves with time: after 7 days, within 10% and after 2 months, within 5% of actual radon levels. Easily reset your device to test a different room.

Simple.

The first battery-operated digital radon detector can be placed anywhere in your home. The batteries last up to two years, making it easy to radon test every room of your home.

Accurate.

Developed by our in-house Norwegian CERN particle physicists, our state-of-the-art radon testing sensor is incredibly accurate. Get meaningful results with continual monitoring for short and long term averages.

Radon levels fluctuate daily.

Peace of mind with daily monitoring: See both long and short term levels to make the right changes for your home. Generate a radon report as evidence for low levels when selling your home.

Product description

How it works



1: Plug the Wifi gateway into socket, pull out the water sensors battery insulating tab.

2: Download ‘Govee Home’ on App Store or Google Play to your cellphone.

3: Open the app and sign up with your email account.

4: Click the icon '+' at the top right corner and select H5040 device.

5: Follow the app prompt to connect your wifi Gateway with your router(not support 5G wifi).

6: Name each sensor like Basements, Kitchen Sinks, Water Heaters and put the water sensors on the detecting location.

7:Get email, Push notifications and alert on your smartphone when leak happened

• Real-time Alerts: Connect the gateway to WiFi, and it will instantly send emails, App notifications & alerts to your phone when water leakage occurs even you're not at home. Water sensors and gateway are paired right out of the box. Note: Doesn't support 5G WiFi.
• Loud Alarm with Mute: If WiFi is not temporarily available, our 100dB alarm is loud enough to be heard. Press the Mute button to silence the alarm when you find the leak.
• Drip and Leak Alerts: Water sensor comes with 2 groups of back water detector probes & 1 group of front probes for pipe dripping detection. Use the App to name each sensor with its location.
• Connects to Multiple Sensors: WiFi connection gateway has a stronger and more stable signal transmission & lets you connect with multiple sensors simultaneously (10 max).
• IP66 Waterproof : The completely sealed IP66 waterproof design allows for extended use in high moisture areas.

User questions & answers

Question:	How can I add my devices? I deleted 2 sensors to get rid of a fault message and can’t get them back on my app
Answer:	Hello, This is a direct spark ignition.
Question:	I tried connecting with wifi several times as it indicated - I had next to my router with 2.4 G connection. Any help
Answer:	No it is not...It is actually made by HTP.
Question:	How far away can the gateway be? I have 3 floor house and need a sensor on each floor. Will that be a problem? Can you add more sensors
Answer:	Charge it for 1-2Charge it for 1-2 hours each time, and the indicator light above will remind you when the product is fully charged. hours each time, and the indicator light above will remind you when the product is fully charged.
Question:	how do I purchase additional sensors? I cannot find them - Govee B
Answer:	It is divided into two states: open and closed. It has two different colors divided into purple light and red light. Violet light can detect whether there is cat moss by illuminating the cat. The red light has five different patterns, which can be switched by the rotating button. Hope my answer can help you.

Product features

Govee WiFi Water Leak Detector

Using the connection between the gateway, water sensors, and Govee Home App, you can monitor any leakages on your phone while you are away from home. There are no annoying wires, which makes monitoring even easier. You can also name each WiFi water sensor according to their location on the App. When a leak occurs, the sensors will not only sound a loud alarm, but email and App notifications will also be sent to your phone. You can clearly know where the leakage happened and deal with it in time.

Open the App, Connect to H5040.

After downloading 'Govee Home' from the App Store or Google Play to your phone, please open the App and sign up with your email account. Then click the icon '+' at the top right corner and select H5040 device.

Press the Pairing Button for 3 seconds

Press the pairing button for 3 seconds until the red and blue light flash alternately and then input the WiFi password on your phone. Please note any special characters, blank spaces, and so on.

Connect Your WiFi Gateway

Follow the app prompt to connect your WiFi "Govee_Gateway_xxxx" with your router (doesn't support 5G WiFi). Place the water sensors in the detecting location and name each water alert .eg. basement, kitchen. Then you can begin to monitor the water leakage on your phone!

Monitor Water Leakage on Your Phone

After a successful connection, you can place the sensors and start to monitor water leakage on your App. Note: Please ensure the App and your phone settings are set to allow "push" notifications. The gateway will not send push notifications if the leak happens again in 90 seconds.

WiFi Gateway Supports Up to 10 Leak Detectors

Compared with others, our Govee WiFi gateway connection design has a stronger and more stable signal transmission. It works as a bridge to connect your WiFi with multiple water sensors. It receives the water leakage info from the sensors when leaking happens and sends it to the Govee Home App on your phone.

Loud Adjustable Audible Alarm with Sensitive Sensor Probes

Sensitive Sensor Probes: With 2 groups of water detector probes on the back and one group of probes on the front, the water alarm will swiftly notify you about any water pipe dripping.

Loud Adjustable Audible Alarm: Ultra-loud adjustable 0-100 dB alarm allows you choose a comfortable sound level to detect any water leakage when WiFi is not available in your home.

Product description

Plug-In carbon monoxide alarm with battery backup.

Protect your family from the dangers of carbon monoxide (CO) exposure with the Kidde KN-COPP-3 Nighthawk Plug-In Carbon Monoxide Alarm with Battery Backup and Digital Display. The Nighthawk is an easy-to-install unit that provides reliable protection against the dangers of CO. It features a digital display that shows CO levels in parts per million allowing you to see if, how, and when levels change.

Plug-in unit with battery backup and digital display that shows CO level Level button displays the peak CO level recorded by the alarm since it was last reset Loud alarm pattern sounds when unit detects elevated CO levels Direct-plug, 6-foot power cord, and table top mounting options. Five-year limited warranty

This discreet alarm is designed to fit into any standard A/C outlet in your house. View larger.

The easy-read digital display updates every 15 seconds to indicate any abrupt changes or alarming trends in CO levels. View larger.

Advanced Technology in an Easy-to-Install, Plug-In Design

Designed for home use, the Kidde KN-COPP-3 Nighthawk is a UL-listed, A/C-powered, plug-in CO alarm that utilizes sophisticated electronic components and sensor technology to protect you and your family from the dangers of CO. It plugs directly into a standard A/C outlet and includes a 9-volt battery backup that provides continuous monitoring of CO levels--even during power outages.

About Carbon Monoxide: The Silent Killer

The leading cause of accidental poisoning deaths in North America, carbon monoxide (CO) is often referred to as the silent killer because it's odorless, tasteless, and invisible. Carbon monoxide poisoning can come about via a number of sources, including everyday items and appliances in your home or office. And because symptoms of CO poisoning mimic the flu or other common illnesses it can often go undiagnosed.

Audible Alarm Pattern Alerts you to Elevated CO Levels

When placed on every level of your home, alarms like the KN-COPP-3 Nighthawk can help protect everyone in the house from CO exposure by giving you an unmistakable signal when levels have reached an unhealthy point. If unhealthy levels are detected, the alarm will emit four quick audible beats every five seconds until either levels decrease or the reset button is pressed.

Easy-to-Read Digital Display Shows CO Levels

The KN-COPP-3 Nighthawk is unique among traditional CO alarms because of its digital display. This display clearly shows levels of CO that the unit has detected and stored-- from 30 to 999 ppm--and it updates every 15 seconds to indicate any abrupt changes or alarming trends. The display also shows the peak CO level recorded by the alarm since it was last reset or unplugged.

LED Shows Sensor Status

With the KN-COPP-3 Nighthawk, you never have to wonder if the sensor is functioning properly. A blinking dot in the lower right-hand corner of the display denotes normal operation, so you can trust that it's working. In addition, you can test alarm function by pressing the test/reset button at any time to verify that the horn and electric circuitry are operating properly.

Convenient Mounting Options

The KN-COPP-3 Nighthawk has a low-profile design that makes it suitable for any room in your home. The detector can be plugged into any standard A/C outlet; it's plug can be snapped into the back of the unit and can be rotated so the alarm remains vertical, independent of whether the electrical socket is mounted vertically or horizontally. In addition, the alarm comes with a 6-foot extension cord, so the unit can be plugged into the wall outlet and then placed on a table or shelf. For the most thorough protection, place an alarm on every level of your home.

The UL-listed Kidde KN-COPP-3 Nighthawk has a seven-year life and is backed by a five-year limited warranty.

About Kidde: A UTC Fire and Security Brand

Renowned for global leadership in fire detection and suppression, Kidde provides solutions ranging from portable fire extinguishers to advanced industrial controls such as flame detection and explosion suppression systems. Kidde is a UTC Fire and Security brand, with a history that's rich with innovations, from the patent of the Chubb Detector Lock in 1818 to the development of the world's first wireless networked smoke detectors in 2004.

What's in the Box

Kidde KN-COPP-3 Nighthawk CO Alarm, 9-volt battery, mounting hardware, and installation guide.

Keep your family safe by placing alarms and extinguishers in each area of the house, and by having a fire escape plan. Click here for a detailed image.

From the Manufacturer

The leading cause of accidental poisoning deaths in North America, Carbon Monoxide is odorless, tasteless and invisible, it's a silent killer. Kidde CO alarms include the most accurate sensing technology available, the patented Nighthawk electrochemical sensor. This alarm can be mounted three ways: plug directly into AC receptacle, mount on tabletop using 8 foot power cord, or wall-mount. The digital readout continuously displays carbon monoxide levels from 30-999 parts per million. This unit has a loud, 85-decibel alarm that sounds when CO reaches dangerous levels. One of the features of this product is peak level memory, which means this unit will recall highest level of CO present since previous reset. Install at least one CO alarm on every floor and in sleeping areas. Make sure CO alarms are at least 15 feet away from cooking or heating appliances to prevent false alarms. Replace CO alarms every 5 to 7 years to benefit from the latest technology upgrades.

• Peak level button – Displays the peak CO level recorded by the alarm since it was last reset or unplugged
• Test button functions – Tests the unit for proper operation and resets the carbon monoxide alarm
• LED operation – Blinking dot in lower right corner of display denotes normal operation
• Ten years after the initial power up, this alarm will “beep” two times every 30 seconds to indicate that it is time to replace the alarm.
• Note: This CO alarm is not battery operated. However, these alarms are equipped with 9 volt battery backup – the 9 volt battery is to supply short term back-up during a power outage.
• Power source: 120VAC. Temperature range-40˚F (4.4˚C) to 100˚F (37.8˚C). Humidity range-5%-95% relative humidity (RH)

Product features

Easy to Read Display

This plug-in CO alarm is designed with a clear, visible readout that will accurately record the levels of carbon monoxide present so that you can quickly know if an area of your home is at risk. It measures CO levels between 30 and 999PPM, and the display will also indicate if the battery needs to be replaced.

Unbeatable Protection

Always protect your family and home by making sure you are prepared for any emergency or hazard with the Kidde plug-in carbon monoxide detector. This CO meter uses an electrochemical sensor and features a clear digital display screen to monitor and record any CO levels in any room of your house. This sensitive and clear detector will leave you confident that you are protected against carbon monoxide.

Peak Level Memory Feature

Displays the peak CO level recorded by the alarm since it was last reset or unplugged

Product description

Whisper uses ultrasonic technology to listen for the sound of a gas moving through a leak site, making it a super versatile tool for leak checking any gas in pressurized or vacuum systems. Point Whisper at ceiling pipes to gross leak check from the floor. You can even use Whisper in noisy environments!

• Detects pressure and vacuum leaks for all gases
• Hear the leak using the included headphones
• Works even in noisy environments
• Laser pointer makes it easier to pinpoint the leak
• Applications include pressure/vacuum leaks, electrical arcing, malfunctioning steam traps, and more
• Only technology to detect pressurized nitrogen leaks
• Runs on two D-cell alkaline batteries

User questions & answers

Question:	Does it come with headphones
Answer:	Yes
Question:	if I pressurize my underground pool skimmer line with air, would this be practical for locating a leak
Answer:	I don't believe it will help in this application. To detect the leak, you must be able to see the line and place the unit relatively close to the hose. So for your application, you would need to expose your lines. If your pool skimmer lines are visible, it is easier to inject a dye, such as a UV dye, and shine a UV lamp to find it. If your lines are not visible then you would need to dig up the line to look for the leak. When I had an underground leak, I hired a person to find it for me. It was worth the money for the one time repair.
Question:	would I need the transmitter device to leak check air conditioning coils etc
Answer:	This is a simple tool to hear the whistling of high pressure air going through a small opening. The high frequency pitch is picked up by the microphone. You won't need anything else to operate this. I prefer to use my own headphones instead of the ones in the kit, but that is a personal preference. It also has a sound bar so you can see it, too. You don't need to listen, although I find it helpful.
Question:	how small of a leak will it measure
Answer:	Very small

Product description

Promote greater household safety with the First Alert 9120B Hardwired Smoke Alarm with Battery Backup. This 120 volt AC smoke detector uses an ionization smoke sensor to reliably detect smoke from hot, fast flaming fires and alerts you with a loud 85 decibel alarm. Designed to be wired directly into your home's electrical system, this hardwired smoke detector features a backup battery that helps keep the alarm functioning even in the event of a power outage. The gasket less mount helps ensure a perfect alignment for easy installation, while tamper resistant locking pins keep the alarm secure. And thanks to the convenient test/silence button, you can easily check whether the alarm is functioning properly and mute false alarms. This smoke alarm can integrate with up to 12 other First Alert or BRK hardwired alarms and features a latching indicator that identifies which unit triggered the alarm.

Introducing the revolutionary BRK 9120 series smoke alarms which have been redesigned from the ground up. They install faster, perform better, and are even smarter than before. All of these improvements help reduce nuisance alarms and save you time and money. BRK Electronics smoke alarms are designed to be easy to install, easy to maintain, and quality-engineered for years of virtually maintenance-free service.

The 9120B AC-powered smoke alarm with battery backup includes these features:

• Ionization sensor which helps detect fast flaming fires that consume combustible materials rapidly.
• 120-volt AC inter-connectable (with maximum 18 compatible devices). The alarm can be interconnected with up to 12 other compatible smoke alarms and six compatible devices like bells, horns, repeaters and door closers. If one unit triggers an alarm, all smoke alarms in the series will sound. Power indicators show which unit in the series initiated the alarm.
• Latching alarm indicator which automatically identifies which unit initiated the alarm.
• Smart technology to reduce nuisance alarms.
• 9-volt battery backup for peace of mind during power malfunction.
• Single test/silence button which both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality.
• Perfect mount system including a gasketless base for easy installation and new mounting bracket that keeps the alarm secure over a wide rotation range to allow for perfect alignment.
• Mounting bracket lock for tamper resistance.
• Dust cover to keep unit clean during construction.
• 10-year limited warranty.

All BRK Electronics smoke alarms meet UL 217 standard and are listed with the California State Fire Marshal. They use the new UL mandated repeating 85-decibel alarm horn pattern. 10-year limited warranty. This unit is approved for sale in Oregon after new revisions on law HB2586.--Bree Norlander

What's in the Box

One smoke alarm, one 9-volt battery, and user's manual

From the Manufacturer

The revolutionary BRK 9120 series smoke alarms have been redesigned from the ground up. They install faster, perform better, and are even smarter than before. All of these improvements help reduce nuisance alarms and save time and money. BRK Electronics’ smoke alarms are designed to be easy to install, easy to maintain, and quality-engineered for years of virtually maintenance-free service. The 9120B includes an ionization sensor which helps detect fast flaming fires that consume combustible materials rapidly and is 120-volt AC inter-connectable (with maximum 18 compatible devices), which lets the alarm be interconnected with up to 12 other compatible smoke alarms and six compatible devices like bells, horns, repeaters, and door closers. If one unit triggers an alarm, all smoke alarms in the series will sound. Power indicators show which unit in the series initiated the alarm and a latching alarm indicator automatically identifies which unit initiated the alarm. This is smart technology to reduce nuisance alarms. It also has a 9-volt battery backup for peace of mind during power malfunction, a single test/silence button which both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality, a perfect mount system, including a gasket less base for easy installation and new mounting bracket that keeps the alarm secure over a wide rotation range to allow for perfect alignment, and a mounting bracket lock for tamper resistance. A dust cover keeps the unit clean during construction. It comes with a 10-year limited warranty.

• Keep your family safe with this hardwired smoke alarm the battery backup means constant monitoring, even if there's a power failure
• Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast flaming fires and alerts you with an 85 decibel alarm
• To ensure complete protection make sure to place one on each level of your home and in each bedroom
• Can connect to other compatible BRK or first alert smoke detectors, to ensure all alarms will sound when smoke is detected
• Simple to use, with a single test/silence button, and side load battery compartment tamper resistant locking brackets and universal mounting brackets make installation easy
• Rigorously tested to meet UL standards120 volt AC power with 9V battery backup to keep alarm functioning during power outage
• First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)
• Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety

User questions & answers

Question:	My entire home is equipped with BRK smoke detector (4120 B) and Carbon Monox Det (CO50120B). They need replacing. Will new BRK fit extant casings
Answer:	Yes all the wired Nest Protect needs is the 120V hot (black) and neutral (white) wires in the electrical box connected to the plug-in pigtail that comes with the Protect. If your house has multiple detectors now you will usually also find a red wire in the electrical box that interconnects your old detectors so that if one goes off they all sound. That wire is no longer needed with the Protect so you just cap it with a wire nut.
Question:	can these be connected together so if one is set off they all go off
Answer:	Yes, but only if you are connected to the internet and then only for the last ten days, and only if the level rises above the heads up level (which is 70ppm and rising for around an hour or a shorter period if over 150ppm). To counter what someone else's answer was - Carbon monoxide does NOT sink. It is in fact lighter than air (CO has an atomic weight of 28 versus Nitrogen (N2) which is also 28 - but marginally heavier (by 0.003 amu due to heavier isotopes), Oxygen (O2) which is 32 and Argon which is 40. However the weight is similar enough in the air in your house that it tends to distribute as a fluid and is measurable anywhere in a room; it really depends upon how air moves through the space. The levels tend to fluctuate rapidly as CO distributes and any outside air mixes in and additional CO is added. Overall, there is no perfect way to measure the CO levels with one device in one place, but this is as good as most people need.
Question:	How does the Alarm Latch feature "easily identify initiating alarm"? This is major problem with false alarms on my existing Kidde/Firex dual alarms
Answer:	I just checked this for you. I unplugged my wifi router and started a test. All detectors alarmed as expected. So, yes, the system works even without active wifi.
Question:	Can a BRK Model 92120B smoke detector directly plug in and replace an old BRK Model 4120B smoke detector (without an adapter
Answer:	I think very few here understand the question. National code requires interconnected smoke detectors as of 2004, there is an extra wire in the circuit and all smoke detectors are on that wire for 'signal'. When one alarms they should ALL alarm. If I am reading the answers correctly, NEST does not comply with the signal wire. However, it looks like it does set up its own wireless network to act like they are all interconnected. To be honest, after paying for the extra wire behind the wall, why would I want to by 6-8 nests at $100 each when the originals are 20-30 each? This way there is one smart point to notify if any detector is going off. Nests way 6-9 smoke detectors, 6-8 login, 6-8 ip address. Ugh, what a nightmare!

Product features

Smoke Alarms

Place at least 10 feet from kitchen/stove, and on the ceiling or high on a wall, no more than 10 inches from top.

Carbon Monoxide Alarms

Carbon monoxide alarms can be placed anywhere, not just the ceiling or high on a wall. They should be replaced every 5 to 7 years.

Fire Extinguishers

Keep in the kitchen and garage, but make sure to have the right grade for the type of fire that might occur.

Escape Ladders

Have at least one if your home has more than one story. Each room needs 2 escape routes; in most bedrooms it's the window, so have a ladder nearby.

Product description

The Robinair LD7 Premium Refrigerant Leak Detector features a new color graphic display that highlights leak sizes in two unique ways. Bar graph mode shows the amount of refrigerant detected in the air and changes colors as the sensor gets closer to the leak. Sweep mode allows the user to see the level of refrigerant detected in the air through a line graph that helps the user trace back and forth to pinpoint the exact source of the leak. The LD7 also uses an audible alarm to alert technicians of a refrigerant leak, UV LED lights to locate leaks using UV dye and an inspection light for searching in dark locations. The LD7 is compatible with most commonly used refrigerants today, including R-134a and 1234yf, and is equipped with a stable, long life sensor that will last up to 10 years. The LD7 meets all of the current industry leak detector standards and is covered by a 2-year warranty. Uses 4 AA batteries, included.

• Patented 3 LED UV lights with 395-415 nm wave length is optimum for a/c dye fluorescence
• Sweep mode function to pinpoint leak source with automatic calibration and reset to ambient
• UV wave-length: 395-415 nanometers
• Unique 120 x 160 full color graphic LCD screen with user friendly message and error screens
• 3 adjustable sensitivity levels, and 17 inches probe length
• Fit type: Universal Fit

User questions & answers

Question:	Is this a corona discharge or a heated diode sensor
Answer:	It's neither of those types. The sensor on the LD7 is a mildly heated solid electrolyte semiconductor sensor. The sensor detects reducing gases exemplified by hydrogen compounds and halogenated hydrocarbons. It has excellent sensitivity to all HFO, HFC, HCFC, and CFC refrigerants including blends and the new R-1234yf refrigerant. Because it doesn't draw huge power it's able to operate on four AA disposable batteries.
Question:	Does it work on R22 snd R410a
Answer:	Yes. The LD7 features a long life solid electrolyte semiconductor sensor technology that is designed to detect all CFC, HCFC, HFC, and HFO refrigerants including R-1234YF (HFO), R-134A (HFC), R-410A (HFC), R-22 (HCFC), R-407C (HFC), R-507 (HFC), R-12 (CFC), R-404C (HFC). The LD7 is designed to detect all SNAP approved refrigerant blends
Question:	does this comes with a case
Answer:	Yes, it comes with a case,
Question:	is this the same technology as the Prowler from JB
Answer:	The sensor technology is similar, but the features and functions of this product are different than what’s available on the JB Prowler product.

Product description

The Gentex GN503FF is a single or multiple station combination smoke and carbon monoxide alarm. It's designed for 120V hardwired use and features a 9V battery backup for ensured safety even when power is lost. This Gentex smoke/carbon monoxide alarm features a temporal 3 (T3) audible signal for smoke detection and a temporal 4 (T4) audible signal for carbon monoxide evacuation. This model features a universal mount that can be use for ceiling or wall applications. This Gentex combination smoke and CO alarm also includes two sets of auxiliary Form A/Form C relay contacts for initiating remote functions and annunciation.

• Horn frequency 3100 Hz (nominal) Meets sensitivity requirements of ANSI/UL 2034 Two sets of Form A/Form C contacts that activate independently for smoke and CO events Relay contacts operate on battery back-up Push button self-test feature Push button functional test feature Quick-disconnect wiring harness Non-latching (self-restoring) alarm Fully insect protected Red LED pulses every 30 seconds, green LED for AC power on Mounting hardware adapts to standard junction boxes, including but not