7 best unknown light meters

Product description

A reliable fiber optic power equipment is quite important in the era of high bandwidth. This hand held optic meter could help to inspect cables capabilities, calculate relative power loss, locate the fault and troubleshooting.We dedicate to providing customers with practical fiber tools, which means that you have an affordable choice for the functional and constructive optic meter.Specifications:Calibrated Wavelength (nm): 850nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nmDetector: InGaAsMeasurement Range (dBm): -70 - +3Input: DC 9V/1000mAResolution (dB): Linear 0.1% / Non-linear 0.01dBmConnector: SC, FC, ST/ Universal 2.5mm AdaptorOperating Temperature(C): -10 - +60Storage Temperature(C): -25 - +70Relative Humidity: 90% (+30C)Working Hours: >48 hoursSize: 190mmx100mmx48mm/7.48inx3.94inx1.89inPackage Content:1 x Optical Power Meter1 x Oxford Fabric Case1 x User Manual3 x AA Battery1 x ST, FC, SC Connector

• Fast and accurate Don't wait for preheating, just plug it in and that's it. / - 5% uncertainty, -70 to 3 dBm measurement, relative power calculation, calibration function.
• Light blue screen Detail means profession, a distinctive result or display of information ensures the satisfaction of the user experience.
• Durable. Sensitive chip and resistant internal structure. Low battery consumption, 48 hours of work for continuous operation. (3 x AA batteries included)
• 6 Wavelength and light source. 850/1300/1310/1490/1550/1625 nm Red light locator 5KM SC / FC / ST adapter. Covering most of the maintenance needs of CCTV Communication Engineering by CATV
• Practical practical size. 7.5x4x1.9 inches, weight 0.9 LB, Rugged Oxford fabric case. Your reliable fiber tester easy to transport.

User questions & answers

Question:	Will this work on the escort ixc
Answer:	no its sewed to the top of the boot
Question:	Will this fit the cobra spx
Answer:	I would guess small or medium

• Quantum Par Meter for LED photosynthetic light measurement for plant growing
• Damp rated IP68 construction
• Includes Apogee AM-310 Telescopic Wand (Retail Value $59.95)
• Authorized Distributor for Apogee Instruments
• Made in the USA in Logan Utah

User questions & answers

Question:	Will the MQ 500 read far red
Answer:	It has a semi-soft plastic overmould around the meter itself, orange in the picture above. It came with push-on alligator clips to go on the supplied test leads. Be aware this DMM doesn't do current measurements and IMO, tries to be too 'smart'.
Question:	Does this read par and/or ppfd
Answer:	It will turn off or indicate zero line volts when you turn off the proper breaker. I use a breaker locator then verify by measuring zero volts at the load end.
Question:	This only reads led lights? will it work for cmh lighting
Answer:	The product seems to work well but the voltage drop accuracy is not correct in my opinion. I did a test with a heater load and a Fluke meter and the circuit analyzer was showing more voltage drop than there actually was.
Question:	is there a version of the mq-500 that can detect into the uvb range
Answer:	Some Googling turns up that Sinometer and Mastech are related companies. It appears that the brand names are somewhat interchangeable, and often meters marked "Mastech" are listed as being from Sinometer. E.g. http://www.newegg.com/Product/Product.aspx?Item=9SIA04E0BA8503. Item title is "Mastech 8268", box and product both say Mastech. Meter works. Probably not worth worrying about.

Product features

The Apogee MQ-500 Full Spectrum Quantum Sensor Meter Bundle

The MQ-500 has a hand-held meter, attached via cable, that displays and stores measurements. The sensor incorporates a blue-enhanced silicon photodiode and custom optical filters with a rugged, self-cleaning sensor housing design, anodized aluminum body with acrylic diffuser. Typical applications include PPFD measurement over plant canopies in outdoor environments, greenhouses, and growth chambers, and reflected or under-canopy (transmitted) PPFD measurements in the same environments.

AL-100 Quantum Sensor Leveling Plate

Proper sensor installation requires that the sensor be as level as possible for most applications. This leveling plate is designed for fixed sensor use on flat surfaces and for fixed position measurements of PAR over time.

The plate includes an integrated bubble level designed to work between -29 and 55 C.

AL-120 Sensor Mounting Bracket

The AL-120 Sensor Mounting Bracket with leveling plate is designed to mount Apogee sensor models to a mast or pipe with an outer diameter of 1.3" - 2.1".

The bracket has a leveling plate with an integrated bubble-level to make leveling simple and accurate for proper sensor installation.

AM-320 Water Submersible Wand

The AM-320 allows the user to place the sensor in hard to reach areas such as in aquarium tanks and greenhouses.

The wand unscrews into three sections for easier storage and transport and incorporates a mounting fixture at the end of a 40 inch (102 cm) segmented fiberglass wand and is well-suited for fresh and saltwater use.

AC-100 Comm Cable

The AC-100 cable is required to download data recorded in Apogee handheld meters to a computer. Free ApogeeAMS software (Windows compatible, XP and later; Mac compatible, 10.10 and later) used to interface Apogee meters with a computer is included on a flash drive or can be downloaded.

Product description

Solar meters are compact, handheld radiometers with simple pushbutton operation and NIST-traceable accuracy. They're proudly made in the USA. The Solar meter Model 4. 2 Sensitive UVA Meter measures the UVA region from 320-400nm. Applications include monitoring UV lamp intensity and aging, measuring outdoor UVA, testing acrylic shield transmission, testing window film/transmission, and testing eyewear UVA blocking capabilities. To operate your Solar meter, aim the sensor window located on the top panel of the meter directly at a UV source. Press and hold the push-button switch on the face of the meter and read the results in µW/cm² on the LCD screen. For best results take note of the distance the reading was taken from the UV source in order to ensure repeatable results. A 9V battery is included, along with a rugged carrying case and Calibration Certificate.

• High Accuracy Measurement of UVA Light
• Measures 320nm to 400nm
• Range from 0-1999 µw/cm²
• NIST Traceable Calibration Certificate Included
• Simple, One Hand Operation

• HIGH POWER LITHIUM 3V COIN BATTERY - Are you looking for a lithium button cell to replace the battery in your calculator or another device? 10PACK Beidongli CR2032 can more efficiently extend the life of your device. Getting these 10 super batteries will never disappoint you, and you'll never have to rush to the store to buy batteries again, which means that you can forget your battery for a long time.
• BATTERY PACK EXCLUSIVELY DESIGNED FOR SMALL ELECTRONIC DEVICES - Beidongli CR2032 provides excellent performance for all your small electronic devices. Sealed packaging design is more convenient and safer for use. It applies to remote controls,
• calculators, watches, key inputs, computer mainboards, pedometers, PDAs, electronic notepads, garage door openers, game consoles, toys. MP3 players, recorders, LED lights, pet collars, calorie counters, medical devices, and so on.
• PERMANENT LEAK-FREE HIGH-END ENVIRONMENT-FRIENDLY BATTERY - Are you worried about the performance and safety of the coin battery? Are you tired of cheap coin batteries that run out of power for a few days or less? Please use the Beidongli high-performance battery pack. We assure you that there will never be leakage, and the unique electrolyte formula can enable your device to work up to two years. High-quality CR2032 battery makes your device last longer, which has high quality and costs reaso
• RETAIL PACKAGING SPECIALLY DESIGNED FOR CHILDREN’S SAFETY - We are the only factory in China with a paper safety packaging design patent in the battery industry. Button batteries are mostly used in children's toys and small electronic devices. Considering the safety of children, we have set up a professional design team. What You Get: 10 PCS CR2032 Batteries in Exact Blister Pack.60-month Warranty and Friendly Customer Service.

User questions & answers

Question:	Do these work on Logitech Bluetooth keyboard
Answer:	These batteries are what they are; 3v, disc shaped batteries...they work fine in all of my devices that take this style of battery. There are many models of Logitech Bluetooth KBs...you'll have to check the specs associated with your specific KB to determine if this product is the correct product the KB you have in mind.
Question:	Does this battery work for wireless doorbells
Answer:	The battery works with any device that calls for that battery type.
Question:	Can this work on a Bose radio
Answer:	Check the battery numbers. If it matches it should work
Question:	where are these batteries made
Answer:	china

Product features

cr2032 Battery parameter

Model: CR2032H

Diameter: 20 mm

Height:3.2mm

Rated voltage: 3.0V

Rated capacity: 240mAh

Standard current: 0.20 mA

Maximum current from 15mA

Continuous current: 5uA

Weight: 3.0g

Precautions

1. Don't mess with the batteries and put them together barely

2. Do not throw the battery into the fire

3. Do not solder directly on the surface of the battery

4. Do not charge the battery

5 .Do not split the battery

6 .Do not deform the battery

7. Do not heat the battery

8. Different types of batteries cannot be mixed

9. Proper installation and use of batteries to prevent short-circuiting of the battery and incorrect positive and negative

Longer and more durable

The battery uses a lithium battery and each battery is strictly controlled to ensure that each battery has sufficient voltage and long-term use.

Mercury free, durable

The battery is made of stainless steel bump technology and is in better contact with electrical appliances. It uses new energy technologies to be safer and safer.

Stainless steel nickel plated high-end materials

The appearance of the battery is made of stainless steel nickel-plated casing, which has good sealing performance, effectively preventing short circuit and leakage between the positive and negative electrodes of the battery, and improving the safety performance of the battery.

High quality raw materials effectively protect electrical appliances

The battery uses chemical manganese dioxide as a positive electrode material and lithium metal with high energy as a negative electrode material, which does not cause high and low voltage instability, and effectively prevents voltage from being unstable to the electrical device.

• SEVEN BACKLIGHT COLORS: Use imported LED Colorful LED lights, just press the backlight button on the left, you can clearly see the time at night. dark blue, green, red, sky blue, orange, pink, purple, these seven backlight colors can be adjusted when you hold down the upper-left backlight button for 3 seconds, this can satisfy the child's curiosity.
• 3D CARTOON DESIGN: 3D cute cartoon design, each cartoon figures are lively and interesting. All figures are designed by professional designers from color to tiny details. Kids will love it.
• MULTIFUNCTION: 50M waterproof, shock resistant, alarm clock, stopwatch, week and date display, back lighting, Luminous pointer ,calendar, 12H/24H time function, hourly chime, 1/100 seconds stop watch with split count function.
• SAFE & COMFORTABLE: Safe and high quality silicone strap, soft and comfortable for kids wear; uses healthy environmental protection material, through international CE certification, can be rest assured to wear for kids
• PURCHASE WITHOUT WORRY:We care about our customers, If you have any dissatisfaction, please send message to us on Amazon, we will do our best to make it right! Click the Add to Cart button now to ensure you receive the best casual business analogue quarts watch on Amazon.

User questions & answers

Question:	Why is there some pictures in the reviews of 2 different watches that look nothing alike how do I know that the watch I ordered will look like
Answer:	Thank you for the inquiry.You may choose the shoe size based on the length of insole.Please choose the size that fits you from the size chart.
Question:	Does it have a velcro band
Answer:	They are on the heavy side because of the insulation.
Question:	What is the average lifetime for the battery? & how hard is it to change
Answer:	Thanks a lot for your concern of TideWe breathable hunting chest waders. Sorry for the inconvenience to you. But they will be available in about 10 days.
Question:	Can mode be changed from 24 military time to regular
Answer:	I ordered the same size as boot size, and I still had room for thick socks.

Product features

7 Colors Flashing LED Lights:

• Using imported LED colorful LED lights, you can emit different colors of light effects, just press the backlight button on the left to clearly see the night time.
• This cute color watch is not only beautiful, but also very comfortable to wear. Coupled with the unique colorful glare, this is definitely the gift of choice for children, and the children will love it.

Cute Watch For Children

• This kids watch is available in multiple colors. Each color is very cute and full of energy and vitality. I believe your child will like it very much.This watch is perfect for children and can make your child looks vibrant during the childhood life.

High Quality

• SAFE & COMFORTABLE: Safe and high quality silicone strap, soft and comfortable for kids wear; uses healthy environmental protection material, through international CE certification, can be rest assured to wear for kids

50M Water Resistant

• **NOTE**:
• Please DO NOT PULL OUT the Button Underwater. Use in extreme Hot or Cold temperature will shorter watch life.
• If mist or droplets found inside watch surface, please contact manufacturer immediately.
• Clean the strap by a soft cloth on regular bases is highly recommended.
• Too much water contact will shorter watch life.

Product description

Emporia has developed the next generation of the Vue Energy Monitor. Committed to bringing the best value at the lowest price possible, the Vue provides everything you need to monitor your entire home's energy usage in real time. See how much electricity your home is using anywhere, anytime.

• INSTALLS IN CIRCUIT PANEL of most homes with clamp-on sensors. INSPECT YOUR ELECTRICAL PANEL for compatibility. Panels with access only to busbars will need flexible sensors available from the emporiaenergy website. Includes DIY instructions, though a professional electrician is recommended.
• 24/7 ENERGY MONITORING: Monitor your home's real power anywhere, anytime to prevent costly repairs, conserve energy, and save costs. Monitor solar / net metering. Light commercial 3 phase option available as a separate bundle.
• APPLIANCE MONITORING WITHOUT GUESSWORK: Comes with sixteen (16) 50A sensors to accurately monitor your air conditioner, furnace, water heater, washer, dryer, range, etc.
• LOWER YOUR ELECTRIC BILL: Gauge real-time spending and get actionable notifications to understand where you can save costs.
• REAL-TIME ENERGY DATA: Vue connects to 2.4GHz WiFi to monitor energy use with iPhone / Android app. Vue sensors provide 1-second data and are accurate from ±2%. The Vue is UL and CE Listed for your safety.

User questions & answers

Question:	Can this be set up to use and view on a desktop computer or does a person have to have a cellphone
Answer:	The app can show water usage down to 1 minute intervals. So, in essence, you can capture the flow rate (GPM) of your appliances. The data is near-real-time, as there may be up to a one minute delay. We have had several customers use our device to do water audits, where they determine the flow rates of all of their appliances. As you said, you just need to run them one at a time.
Question:	Does this work with a 240 line
Answer:	On your meter, we can measure a flow rate as low as 0.02230774 gal/min. On badger meters, we are extremely accurate. If your meter says that you have used 100 gallons, the Flume device will say the same.
Question:	Any monthly app fees
Answer:	The Flume water sensor is powered by 4 user-replaceable AA Lithium batteries. In ideal conditions, these batteries can last between 1.5 and 2 years. All of the following are ideal conditions for maximizing battery life: - Outdoor meter pits where there is a direct line of sight between the Flume water sensor and the bridge - A short distance between the water sensor and the bridge (i.e. less than 500 feet). The shorter the distance, the longer the battery life. - Outdoor meter pits with plastic or concrete lids - Basement installations However, in some environments, the battery life can be much shorter. All of the following will reduce battery life: - Outdoor meter pits with metal lids - Outdoor meter pits that frequently fill with water - A long distance between the water sensor and the bridge (i.e. more than 500 feet) - Obstacles between the water sensor and the bridge, such as walls that contain rebar and automobiles
Question:	Is there a subscription needed
Answer:	I live in Austin, TX and purchased my Flume Water Meter this year in July of 2019. It is near the end of November and my battery still shows to be between 60-100%. The app only has three bars to represent battery consumption. I’ve not had any issues with the heat here in Austin, TX.

Product features

Turning Power Into Knowledge

Emporia has developed the next generation of the Vue Energy Monitor. Committed to bringing the best value as affordable possible, the Vue provides everything you need to monitor your entire home's energy usage in real time. See how much electricity your home is using anywhere, anytime.

Monitor Individual Circuits without the Guesswork

Add individual 50A sensors to your Vue to monitor up to 16 individual circuits — providing accurate energy use for the appliances and equipment that is important to you. No guesswork. No trying to discern energy signals from background noise. Just simple, easy, and accurate insight into your home. 50A sensors are sold separately and also sold in bundles with the Vue.

Measure Solar Net Metering without Extra Hardware

Solar net metering is built right into the Emporia Vue. The simple Emporia iOS and Android app will show when and how much electricity you are consuming and when and how much excess energy you are producing back to the grid — giving you keen insight into the impact of your solar panels as they relate to your energy use.

Installs in the Electrical Circuit Panel of your Home

The Gen 2 Vue installs in your home's electrical panel using CT sensor clamps that go around your mains and the other circuits you wish to monitor. DIY instructions included, but a professional electrician is recommended. The Vue system is designed for field installation in a switch enclosure as per 312.8(B) of the 2017 NEC regarding Power Monitoring Equipment.

Do You have Metal Bus Bar Mains in Your Panel?

Our Flexible Current Sensor solution is now available on the EmporiaEnergy website. These current sensors are meant to replace the 200A main sensors that ship with Gen 2 Vues. They employ a bendable Rogowski coil with a 1.4” (36mm) opening that can fit around most bus bars or into tight spaces where a standard current sensors clamp cannot fit. Installing the Flexible Current Sensors is still dangerous, and Emporia highly recommends that installation be performed by a licensed electrician or other qualified professional.

Add Emporia Smart Plugs to Your Vue

Emporia Smart Plugs (sold separately) can be added to your Vue system to help you to not only monitor the energy of lighting and small appliances, but to also set timers, schedules, and turn them on and off from anywhere, any time with the Emporia app.

• Kindly NOTE: This soil tester can not be applied to test pH value of any other liquid. If the soil is too dry the indicator will not move, and water it before testing.
• 3-IN-1 FUNCTION: Test soil moisture, pH value and sunlight level of plant with our soil meter, helps you specialize in grasping when you need to water your plant.
• ACCURATE & RELIABLE: Double-needle Detection Technology strongly enhances the speed and accuracy of detecting and analyzing soil moisture and pH acidity.
• EASY TO USE: No batteries needed, just insert the sensor probe into the soil about 2-4 inches, toggle switch to test moisture, pH, sunlight you would like to measure.
• INDOOR & OUTDOOR USE: Design to be lightweight and portable, easy to carry around for outdoor use, ideal soil test tool kit for home plants, garden, lawn and farm.

User questions & answers

Question:	Does the light meter measure light over the course of an entire day? Or is it more an instant light measure
Answer:	No, just the smallest one.
Question:	Will this work in coco
Answer:	Only the small level is magnetic.
Question:	Do I have to wait 10 minutes between readings if I’m just measuring soil moisture
Answer:	One Horizontal (level) and Two Vertical (plumb) Vials
Question:	Can the metal rods be taken off and used as a bolt in a crossbow
Answer:	Yes , and it actually fits 4 levels, the fourth is the 3’ which is not a part of this package

Product features

Let Sonkir MS02 Soil pH Tester Make You Become a Good Plant Carer !

3-IN-1 Design

This 3-in-1 soil moisture meter is designed to better know the condition of your plant, detect soil moisture, help you know the pH value of the soil, determine if plants get enough sunlight to keep plants grow healthier !

Scientific Data Monitoring

Help you control every detail and track all changes about your plants. Keep your plants in a healthy condition through scientific data monitoring !

Special Reminder:

1. The pH function of this soil tester can not be applied to test pH value of any other liquid.

2. Since soil most often is in/close to neutral state (with pH value of 7), it is highly likely that you find the needle in display window stay still (because the default pH value is set at somewhere between 7 and 8) when you use it to test the pH value of soil. Customers sometimes are misled by this appearance and hence regard the tester as a defective unit by mistake.

How to Use:

Step 1: Switch to moisture/pH/light position according to demand.

Step 2: Insert the probe into the soil about 2-4 inches.

Step 3: Check moisture/pH/light level in the dial after 10 minutes.

Step 4: Remove probe from soil and wipe clean after each use.

Kindly Note:

1. Do not force it into very hard soil or touch hard objects since it will be easy to damage the probe.

2. Do not use it to test pure water or other liquids. It can only be used to measure soil.

3. Do not leave the meter in the soil for a long time.

4. Please wipe and clean the probe after each use.

5. If the soil is too dry the indicator will not move, and water it before testing.

Test Soil Moisture

Help you specialize in grasping when you need to water your plant.

Test the pH of the Soil

Help you to control the pH value in the soil.

Test Sunshine Level

Know about whether it gets adequate sunlight.

Outdoor Plants

Indoor Plants

Vegetable Garden