13 best humidity meters with dews

• This digital Humidity & Temperature Meter & Wet Bulb Temperature Dewpoint Temperature has been designed to combine the functions of humidity meter, temperature meter, wet bulb temperature and dewpoint temperature.
• It is an ideal Humidity & Temperature Meter instrument with scores of practical applications for laboratory, industrial, engineer and professional.
• Small form factor easy to use, with a white backlit dual display LCD screen can be used in a dark environment.
• The humidity & temperature meter is for use a humidity/ semiconductor sensor.
• Dual Display Temperature & Humidity; Resolution 0.01%RH, 0.01 °C/0.01 °F，Max Hold and Data Hold Function; Auto Power Off, Disable Sleep Mode.

User questions & answers

Question:	Could i use this to check the temp and humidity in my snake terrarium
Answer:	I don't see why not. I'd think the snake is who you need to ask.
Question:	Got mine just for one day, however the RH keeps changing even after 4 minutes. Is it normal
Answer:	I don’t consider it normal and mine does not do that.
Question:	What is the mounting hole made for
Answer:	It is so you can mount it to a bracket of some kind. You need to supply all of the of the hardware. The threads are SAE. Hope this helps.
Question:	Where is this made
Answer:	Made in China, thank you.

Product features

Preciva 2 in 1 Digital Humidity and Temperature Meter(9V Battrey Included)

Imported Sensor

• Made of imported sensor which makes it more accurate to measure.

LCD Screen Display

• Double display on the LCD screen: temperature and humidity.
• Dual Display Function
• Backlit Display

Rubber Button

• The rubber button makes the meter more comfortable to use.

Multiple Applications

• Notice:
• Do not put the sensor in the liquid or expose the sensor to sunlight
• Exposure to extreme working conditions or chemical vapor will affect the accuracy of the instrument or even damage the instrument
• When measuring the chemical vapor temperature with a sub-meter, the diffusion of chemicals in the sensor results in a decrease in instrument accuracy and sensitivity, allowing the instrument to prevent a slow recovery in a clean environment for a long time.
• Package List:
• 1 x Digital Psychrometer Humidity and Temperature Meter
• 1 x 9V Battery
• 1 x User Manual

• 2 in 1 digital Humidity and Temperature Meter. Accurately measure any environments temperature, relative humidity (RH), dew point, wet bulb temperature,
• One-step switch between °C and °F,
• Device will power off automatically to save battery when not in use in several minutes,
• Adjustable LCD backlight for clearly showing data,
• Powered by 9V battery which is included.

User questions & answers

Question:	Can you take line surface temperature with it
Answer:	No
Question:	Does it display in degrees Farenheit
Answer:	Yes sir. It gives humidity, dew point, wet bulb, and dry bulb in both celcious and Fahrenheit.
Question:	Can this be also get the Dry bulb temp
Answer:	Ärmel, dry bulb only refers to a temperature reading that is dry as opposed to say checking the temperature of soup or coffee. Dry bulb and humidity will give you dew point and grains of water,but you need a psychometric chart.
Question:	Do you have to add water to it
Answer:	No, no need to add water.

Product features

Portable 2 in 1 Humidity and Temperature Meter

Thanks for coming, you deserve the best! This is Mengshen's Portable 2 in 1 Humidity and Temperature Meter M86.

 

It can accurately measure any environments temperature, relative humidity (RH), dew point and wet bulb temperature.



 

MINI& PORTABLE

Temperature & Humidity Dual Display

Other Main Features

One-Press Unit Switch

Simple switch between Degrees Fahrenheit and degrees Celsius

9V battery which is included. Device will power off automatically to save battery when not in use in several minutes

Product description

Quickly and conveniently take accurate humidity and temperature readings with the Fluke 971.The Fluke 971 is invaluable for facility maintenance and utility technicians, HVAC-service contractors, and specialists who assess indoor air quality (IAQ). Lightweight and easy to hold, the Fluke 971 is the perfect tool for monitoring problem areas. With a rugged holster and protected sensor, the Fluke 971 is built to perform and made to last. Backlit dual display of humidity and temperature. Measures dew point and wet bulb temperatures. 99 record storage capacity. Ergonomic design with belt clip and protective holster. Quick-response capacitance sensor. Compact and lightweight. Temperature range from -20 to 60 degree C. 0 to 45 degree C is +/-0.5 degree C and -20 to 0 degree C and 45 to 60 degree C +/- 1.0 degree C. Relative humidity from 5 to 95 percent. Min/Max/Avg Data hold. Low battery indicator. 5 to 95 percent RH relative humidity range. Measures 60mm width by 194mm height by 34mm depth. 4 AAA alkaline battery.

• Backlit dual display of humidity and temperature
• Measures dew point and wet bulb temperatures
• 99 record storage capacity
• Ergonomic design with belt clip and protective holster
• Quick response capacitance sensor

User questions & answers

Question:	What happens to readings at higher temperatures say 100C
Answer:	HelloThis meter is mainly for monitoring indoor air quality and has a range of -20c to 60c (-4f to 140f)It does not cover temperatures over 100c it is much higher than its range !!It measures relative humidity too from 5% to 95% .The operating temperature is -20c to 60c so you can not use it when temperatures are higher then 60c.
Question:	Hi, the product has calibration certificate? or You can give me one? Thank you
Answer:	You can buy it with a calibration certificate included: http://www.amazon.com/dp/B01DTCBSMY
Question:	Does it come with a case or is there a fluke case for it available
Answer:	It does not come with a case, but, it will fit in the Fluke C23 soft vinyl case..
Question:	Does it have a protected cap
Answer:	No it doesn’t have a cap, I’ve other sensitive meters that I keep in a small tote bag. But for the money and how long I’ve keep last two units. They’re a great valve!

Product features

Fluke 971 Temperature Humidity Meter

Temperature and humidity are two important factors in maintaining optimal comfort levels and good indoor air quality. Quickly and conveniently take accurate humidity and temperature readings with the Fluke 971. The Fluke 971 is invaluable for facility maintenance and utility technicians, HVAC-service contractors, and specialists who assess indoor air quality (IAQ). Lightweight and easy to hold, the Fluke 971 is the perfect tool for monitoring problem areas. With a rugged holster and protected sensor, the Fluke 971 is built to perform and made to last.

• MS6508 Temperature meter is a new type of digital temperature and humidity meter, which designed to combine the functions of humidity meter, temperature meter, wet bulb temperature and dew point temperature. And Dew point is a measure of how much water vapor actually in the air.
• Dual Display Humidity and Temperature with Accurate Measuring: Humidity range: 0% - 100%RH. Temperature range: -20℃(-4℉) - 60℃(140℉). Dew point Temperature :-50℃(-58℉) - 60℃(140℉). Wet Bulb Temperature:-20℃(-4℉) - 60℃(140℉).
• Digital humidity and temperature meter used for a high range of applications-HVAC,industry,agriculture,meteorology,medical,daily life,building engineer,paranormal investigator,in wine cellar ,machine room and data storeroom
• Multiple Function: With data retention, data storage, unit conversion, backlight, low battery indicator, automatic shutdown, maximum and minimum functions.
• LCD display with backlight with high accuracy sensor, LCD brighter in the darker places, auto power off after 15 seconds

User questions & answers

Question:	What kind of product support after purchase and can sensor be replaced
Answer:	It the sensor is defective during the warranty, we are willing to arrange a new one
Question:	Does this check dry bulb too
Answer:	Dry bulb is just the normal temperature, and this item can measure the normal temperature
Question:	Can the relative humidity be calibrated by the user
Answer:	Neither relative humidity nor temperature can be calibrated by the user. User's manual does not mention this possibility.
Question:	Can this item be sent in for re-calibration periodically, and updated certificate
Answer:	All the items have been calibrated before sending out, and if you need to calibate again, then you can send it to us for re-calibration, but it will cost a lot of time and shipping fee

Product features

Ambient Temperature and Relative Humidity Measure

Wet Bulb And Dew point Temperature Measure

Product description

Extech RH300 Hygro-Thermometer Psychrometer, Switchable °F/°C Temperature Units with 0.1° Resolution, Data Hold Freezes Current Reading on Display, Max/Min Readings

The RH300 is a compact meter that is ideal for field applications. Simultaneously displays relative humidity (10 to 90 percent RH), air temperature and dew point or wet bulb. Calculates T1-T2 differential (air temperature minus external probe temperature) using optional probe (TP890), and T2 minus dew point. Compact meter is well-suited for field applications. Unique sensor cap closes to protect to protect meter during storage. Advanced features include Data Hold, selectable Auto Power Off, and MAX/MIN/Average reading. RH300 complete with 2 AAA batteries.

Key Features

• Simultaneous display of %RH, Temperature and Dew point or Wet Bulb or Probe Temperature
• Wet bulb measurements without slinging
• Calculates T1-T2 differential (Air Temperature-External Probe Temperature) using optional probe
• Unique sensor cap design twists to closed position for protection during storage
• Switchable °F/°C temperature units with 0.1° resolution
• Data Hold freezes current reading on display
• Max/Min readings
• Auto power off to save battery life

Specifications

• Humidity: Ranges 10 to 90%RH, Max Resolution 0.1%RH, Basic Accuracy ±3%RH
• Temperature (internal): Ranges -4 to 122°F (-20 to 50°C), Max Resolution 0.1°, Basic Accuracy ±1.8°F or ±1°C
• Temperature (external): Ranges -4 to 158°F (-20 to 70°C), Max Resolution 0.1°, Basic Accuracy ±1.8°F or ±1°C
• Dew Point: -90.4 to 122°F (-68.0 to 49.9°C)
• Wet Bulb: -6.9 to 122°F (-21.6 to 49.9°C)
• Dimensions: 7" x 1.9" x 1" (178.5 x 48.4 x 24.7mm)
• Weight: 3.3oz (95g)

• Simultaneous display of %RH, Temperature and Dew point or Wet Bulb or Probe Temperature
• Wet bulb measurements without slinging
• Calculates T1-T2 differential (Air Temperature-External Probe Temperature) using optional probe
• Unique sensor cap design twists to closed position for protection during storage
• Switchable °F/°C temperature units with 0.1° resolution

User questions & answers

Question:	what kind of specific battery needs . Indicates a 3.6V lithium but that model and size
Answer:	This unit will take a 1/2AA battery, 3.6 V lithium.
Question:	Este dispositivo se puede volver a calibrar, mediante botones o mediante el software
Answer:	English please
Question:	Can i use this for test the % of humidity in food, like mixed corn
Answer:	No. You can't use this meter for measure humidity in food. This meter is for ambient temperature, ambient humidity, dew point and other variables. Also, you can use an optional wire probe for measure temperature in food, but not humidity.
Question:	Hello, apart from this equipment, I need an extech 407026 lux meter, do you have
Answer:	Thank you so much for your interest in our products. Of course, we do have the 407026 on stock and ready to launch. Please find more about this unit here http://www.extech.com/products/407026

Product features

Extech Instruments Psychrometer

The handy Extech RH300 Digital Psychrometer measures humidity, air temperature, dew point temperature and wet bulb temperature. Wet bulb measurements are taken without slinging. Well suited for field applications, this digital psychrometer also calculates T1-T2 differential (air temperature minus external probe temperature) using optional probe (TP890), and T2 minus dew point.

This psychrometer comes with a unique sensor cap that closes to protect the meter during storage. Advanced features include Data Hold, selectable Auto Power Off, and Max/Min/Average readings.

Triple Measurement Display

The RH300 simultaneously displays %RH, temperature and dew point or wet bulb or probe temperature on an easy to read LCD screen with switchable °C/°F units.

Protective Sensor Cap

This psychrometer comes with a uniquely designed protective cap. Simply twist the cap at the top of the meter to expose the sensor and close it when not in use.

Advanced Functions

Store Min/Max values in the psychrometer's memory and start recording new values with the Reset button. Data Hold freezes the displayed reading, and Auto Power Off helps conserve battery life.

Optional Accessories for Additional Measurements

An optional external Type K probe (model TP890) can provide T1-T2, T2-Dew Point and T2 measurements.

Laboratories

A psychrometer can help determine the precise measurements for experiments and chemical reactions by making the humidity in a contained space known.

Industrial Settings

Ensure optimal environental conditions for industrial equipment or manufacturing materials in a broad range of facilities.

Archival

Aid in the preservation of valuable ancient works with an easy to use digital psychrometer.

Product description

Amprobe products range from an extensive line of clamp meters and digital multimeters to industry-specific tools for residential/commercial electricians, HVAC/R technicians, utilities and industrial maintenance professionals. All Amprobe tools undergo rigorous testing to ensure full compliance with the latest IEC and CE safety regulations in Fluke Safety labs for quality and safety you can trust.

• Relative humidity (RH) and temperature meter measures temperature, relative humidity (RH), dew point, and wet bulb, and is used for HVAC, indoor air quality, and environmental applications
• Dual-scale thermometer measures wet- and dry-bulb temperature and dew point in F and C
• Capacitive humidity sensor ranges from 0 to 100 percent relative humidity (RH)
• Data hold for recording data, and minimum, maximum, and average temperature readings
• Flexible probe reaches inside ducts and other hard to reach areas, and tripod mount stabilizes meter for extended readings

User questions & answers

Question:	Will this work for measuring the humidity inside a steam oven
Answer:	The THWD-10W is not suitable for use in a steam oven.
Question:	Can it be used to check humidity of bark chips and sphagnum moss around potted orchid
Answer:	Yes it probably could, This tool is very sensitive as I do a lot of work in HVAC on rental properties that I own. Living in hot humid florida it will flat out pick the slightest leaks of outside air around door gaps, window frames, sliding glass doors plus what you have coming out of you AC ducts. I found it to be very usefull. Be carefull when handling the probe tip. I;ve it for a year now and after heavy use probably I should check the calibration which the instructions tell you. Also measures wet and dry bulb temperatures. Good luck with your Orchids
Question:	Does it have an adjustable sampling rate and data logger lime the SDL
Answer:	No it does not.
Question:	I need mainly a portable outside device. I work out in the sun and want it for temp and humidity readings. will this work for my needs. Thanks
Answer:	I wouldn't leave it outdoors. It is mainly a portable, instant read device.

Product features

Amprobe THWD-5 Temperature and Relative Humidity Meter

The Amprobe THWD-5 relative humidity (RH) and temperature microprocessor-based psychrometer is designed for HVAC and plant maintenance engineers and technicians. It can simultaneously measure relative humidity, dew point, and wet-and dry-bulb temperature to provide dual-scale readings in ⁰F and ⁰C, and is used for HVAC, indoor air quality, and environmental applications. The capacitive humidity sensor measures RH from 0 to 100 percent. The flexible probe can be extended to reach inside ducts and other hard to reach areas for easy target access, and a tripod mount stabilizes the meter for readings that take more time. The meter has minimum, maximum, and hold functions for recording data, a helpful function for preventive maintenance. It is powered by four 1.5V AAA batteries (included), and includes a carrying bag, and instructions.

Microprocessor-Based Psychrometer

The THWD-5 psychrometer is a microprocessor-based psychrometer designed for HVAC and Plant Maintenance engineers and technicians.

Measures Wet Bulb and Dew Point

Easy and quick access to Wet bulb and Dew point values as well as Relative Humidity and Temperature. The THWD-5 is equipped with an extended probe for easy target access, a large dual LCD display, and is tripod mountable.

Easy-to-use Interface

The Amprobe THWD-5 relative humidity, temperature Meter with dew point, wet bulb and flexible probe features a large digital dual display with a backlight built in.

No hassle warranty No waiting. No shipping charges.

Our commitment to high-quality products and customer service is demonstrated by our industry exclusive 'No Hassle' warranty. In the unlikely event that an Amprobe Test Tool requires warranty service, any of our local dealers are authorized to replace it, on the spot.

Amprobe builds rugged, reliable test and measurement tools

Our products have been trusted by professional electricians and HVAC technicians for over 65 years and range from an extensive line of clamp meters and digital multimeters to industry-specific tools for residential/commercial electricians, HVAC/R technicians, utilities and industrial maintenance professionals. Rugged built electrical test tools with verified quality and safety, Amprobe offers practical, reliable tools at a fair price. Over the last six decades Amprobe has become one of the leading manufacturer of safe, reliable electrical test tools for industrial, commercial and residential applications with over 500 products worldwide. Amprobe not only invented the first clamp meter and the first wire tracer, but has also been consistently first to market with innovative solutions to better meet the needs of our professional customers. All Amprobe tools undergo rigorous testing to ensure quality and full compliance with the latest IEC and CE safety regulations in our state of the art environmental and safety testing labs and are further listed with third party certification labs.

Our commitment to high-quality products and customer service is demonstrated by our industry exclusive 'No Hassle' warranty. In the unlikely event that an Amprobe Test Tool requires warranty service, any of our local dealers are authorized to replace it.

Product description

This instrument is a multifunctional Thermo-hygrometer. It is capable of measuring the Temperature (°C/ °F), Relative Humidity and Dew Point. Alarms functions are visible and adjustable. The alarm is audible when Relative Humidity goes above the preset upper limit or goes below the preset lower limit.

 

Features:

• Temperature (°C/ °F), Relative Humidity % and Dew Point measurements
• Humidity alarm limits can be set
• MAX / MIN reading memory
• Humidity alarm features can be turned on or off
• Selectable °C/°F temperature units
• Can be wall-mount or desktop
• Can be used either indoor or outdoor

 

Specifications:

• Temperature:
  • Range : -10°C~60°C (14°F~140°F)
  • Resolution : 0.1°C (0.2°F)
  • Accuracy : ±1.0°C (±1.8°F)
• Humidity:
  • Range : 20%~95%
  • Resolution : 1%
  • Accuracy : ±5%RH within 25% to 85%RH and 0°C to 50°C
• Dew Point :
  • Range : -29°C~59°C (-20.2°F ~ 138.2°F)
  • Resolution : 0.1°C (0.2°F)
  • Accuracy : ±2°C@20°C (±3.6°F@68°F)
• Sampling rate : about 1 time per 3 sec
• Setting Range of Humidity Alarm Limit : 20% ~ 95%
• Operating Temperature :
  • Mainbody : 0°C ~ +50°C
  • Sensor : -10°C ~ +60°C
• Storage Temperature : -20°C ~ +50°C
  
  
  
  

Set includes:

• 1 x Thermo-Hygrometer
• 1 x Holder
• 2 x AAA Batteries
• 1 x English Instruction Manual
• Blister packaging

• Multifunctional Thermo-hygrometer measures Temperature (°C/ °F Selectable), Relative Humidity and Dew Point measurements at the same time
• Humidity Alarm can be turned on or off manually; Upper & Lower Limit are adjustable
• Can be Wall-mounted or Stand on desktop, ideal for both indoor & outdoor
• -10°C~60°C (14°F~140°F) Temperature Range; 20~95% Humidity Range; -29~59°C (-20.2°F ~ 138.2°F) Dew Point Range
• It complies with all essential health and safety requirements set out in European Directives (CE marking)

User questions & answers

Question:	Does the probe unplug
Answer:	Hi, the probe is fixed.
Question:	Can you set up the Alarm for the dew point
Answer:	It cannot set the Alarm for the dew point but It can set the Alarm for Humidity
Question:	Does it measure dew point indoor, outdoor or both
Answer:	Both
Question:	How long is the remote sensor cable
Answer:	That's it in the picture, 2 inches. It's attached on the back of the thermometer.

• 【Primary functions】: Test ambient temperature, relative humidity, wet bulb temperature and dew point temperature
• 【Features】: Data hold, Celsius degree and Fahrenheit degree selection, backlight, Max / Min, auto power off ,low battery indicator, data store,a wide range of applications, such as: office, industry, education
• 【Professional】:Professional and accuracy thermometer and hygrometer,Fast Response Time , High Accuracy and Performance ; ABS Plastic, Dust & Splash Proof, Durable and Useful
• 【Integration of multiple functions】:The new type of digital temperature and humidity moisture meter is designed to combine the functions of humidity meter, temperature meter, wet bulb temperature and dew point temperature. And Dew point is a measure of how much water vapor actually in the air. Perfect for HVAC,indoor air quality (IAQ) and environmental applications
• 【Service】： We guarantee that we will reply to your questions, comments and requests as soon as possible. We will abide by the principle of customer first and service first, and provide you with cost-effective products to choose from. If you are not satisfied with the products, please feel free to contact us, and we will provide you with replacement service or return service.

User questions & answers

Question:	Does it use bateries or is rechargable? it it uses bateries What type
Answer:	Dear customer this product use the bateries ,the bateries need use 4*AAA

Product features

Ambient Temperature and Relative Humidity Measure

Wet Bulb And Dew point Temperature Measure

• --Dual Display Humidity and Temperature with Accurate Measuring, the temperature range is -20~+60℃, humidity range is 0 to 100%RH; Measure the temperature and humidity in various environment. Three types temperature mode: ambient temperature , dew-point temperature and wet bulb temperature
• --Digital humidity and temperature meter used for a high range of applications-HVAC,industry,agriculture,meteorology,medical,daily life,building engineer,paranormal investigator,in wine cellar ,machine room, in living and office area, traffic environment and data storeroom
• --Professional and accuracy thermometer and hygrometer,Fast Response Time , High Accuracy and Performance ; ABS Plastic, Dust & Splash Proof, Durable and Useful
• --Hold the current measurement data, one button freely switch between humidity and temperature. LCD display with backlight with SHT11 sensor, LCD brighter in the darker places, with an auto power off function
• --The new type of digital temperature and humidity moisture meter is designed to combine the functions of humidity meter, temperature meter, wet bulb temperature and dew point temperature. And Dew point is a measure of how much water vapor actually in the air. Perfect for HVAC,indoor air quality (IAQ) and environmental applications

User questions & answers

Question:	Can this meter be used for measure moisture of dehydrated leaves
Answer:	Sorry, no.it measures the temperature and humidity in the air. Maybe you should buy a moisture meter.
Question:	Can this device detect the humidity of the wall(brick or concrete or wooden wall) by touching the wall and telling the data
Answer:	No, This Meter use to measure air or environment temperature and humidity, If you'd like measure wood humidity, you need Wood Moisture Meter.
Question:	Is there a way to calibrate the unit
Answer:	yes. it is calibrated before leaving the factory. If you want to calibrate it, it needs primary standard source ,We will provide you with a calibration guide. we suggest professional engineers to calibrate the meter.
Question:	Can this meter be re-calibrated
Answer:	yes. it is calibrated before leaving the factory. If you want to calibrate it, it needs primary standard source ,We will provide you with a calibration guide. we suggest professional engineers to calibrate the meter.

Product features

Product Description

VLIKE Digital Thermometer Hygrometer is a battery meter for measuring relative humidity and temperature reading,

a must have tool for HVAC technicians charging air conditioning systems.

The easy-to-use interface makes it for a wide range of temperature and humidity monitoring applications including wine cellar storage, cigar storage, greenhouses, home indoor air quality, nurseries, music rooms, libraries, basements and garages.

It is also useful for verifying humidity and temperature for optimal painting and finishing conditions.

Normally you don’t need to calibrate it because it was calibrated before delivery.

If you want to calibrate it, it needs primary standard source ,we suggest only professional engineers could to calibrate the meter.

Product Specification

Widely Applications

• 2-IN-1: This digital psychrometer is designed to combine the functions of humidity meter, temperature meter, wet bulb temperature and dew point temperature. The dew point is a measure of how much water vapor actually in the air
• BACKLIGHT LCD DISPLY: Unlike the others without backlight on the market, ERAY temperature and humidity gauge is equipped with a bulb light in the LCD screen, user can easy to read the measurements in the darkness
• DUAL DISPLAY: Temperature range: -30 °C~60 °C (-22 °F~140 °F); Humidity range: 0~100%RH; Dew point temperature range: -50 °C~60 °C (-58 °F~140 °F); Wet bulb temperature range: -50 °C~60 °C (-58 °F~140 °F)
• EASY TO USE: Unit switcher: °C and °F; Temperatue mode switcher: normal, dewpoint and wet bulb), Max Hold and Min Hold Function; Auto shutdown without operation after 15 minutes; 6F22 9V Battery included
• WIDELY USED: Used for HVAC, industry, agriculture, meteorology, medical, daily life, building engineer, paranormal investigator, in wine cellar, machine room, data storeroom and etc. 12 months free replacement for the product quality problem

User questions & answers

Question:	Can the user recalibrate the unit
Answer:	I have not used it yet. For CO2 the directions say to go to an outdoor location away from any CO2 sources and adjust it to 400.
Question:	How do i measure wet bulb temperature? All the videos i see of other devices involve getting the sensor wet
Answer:	Just press the 'MODE' key on ERAY psychrometer temperature and humidity meter. Thank you.
Question:	Can it read dry bulb temps for outside A/C condensing units
Answer:	Dry bulb is just ambient temp...stick your thermometer or thermistor in the air and thats your dry bulb..thats why you never see these devices as listed for dry bulb because its just the regular temp reading..
Question:	Will this read temps immediately from room to room
Answer:	it takes a moment to adjust. when temp stops that is it

Product features

ERAY Digital Psychrometer Temperature and Humidity Gauge Meter with Backlight LCD Display

Specifications:

Temperature Measurement Range: -30 °C~60 °C (-22 °F~140 °F)

Humidity Measurement Range: 0~100%RH

Dewpoint Temperature: -50 °C~60 °C (-58 °F~140 °F)

Wet Bulb Temperature: -20 °C~60 °C (-4 °F~140 °F)

Temperature Accuracy: ±0.5°C/±0.9°F (10~55°C); ±1.5°C/±3°F (all other ranges)

Humidity Accuracy: ±3%RH (at 25°C, 10%~90%RH); ±4.5%RH (At other ranges)

Battery: 6F22 9V battery (Included)

Working Environment: -20°C~60°C

Widely Used: (Dew Point Temperature, Wet Bulb Temperature, Air Temperature and Relative Humidity Measure)

Product description

AMTAST Digital Thermometer Hygrometer is a great helper for you to measure environmental temperature and humidity. You can use it in various sites. 

For example, you can check the performance of heating and air conditioning equipment to create a comfortable working environment and check the plants’ living condition to let them grow well.

SPECIFICATIONS

1. Measure Parameters: °C, °F, %RH (relative humidity), dew point temperature

2. Measuring Range: -10 ~ +50°C, +14 ~ +122°F, 0 ~100%RH 

3. Resolution: 0.1°C, 0.1°F; 0.1%RH 

4. Accuracy: ±1.0°C, ±1.8°F, ±3%RH (5~95%RH) 

5. Sample Rate: 1 time sec 

6. Display: 4 digits LCD Display 

7. Auto Power Off: About 20min 

9. Dimension: 4.76” x 2.36” x 1.18” 

10. Weight: 0.4LBS

11. Power Supply: DC1.5V (AAA) Battery x 3pcs (Batteries NOT Included)

Please Kindly Know: Batteries are not included in the package due to Aviation Security Check. Sorry for any inconvenience caused.

• 3 in 1 Meter：This digital meter can be used to accurately measure environmental temperature, relative humidity (RH) and dew point.
• Large LCD Display：Clearly show data of temperature and humidity at the same time, including maximum, minimum and average values.
• Easy to carry: Ergonomically designed, not only durable but also comfortable to hold and portable to carry.
• Auto Power Off：Shut down automatically after 20 minutes of no operation to save battery.
• Wide Application：Suitable for various sites, such as office, library, cinema, storeroom, greenhouse and etc.

• 【Professional Digital Psychrometer】2 in 1 Humidity & Temperature Meter. Accurately measure environments temperature, relative humidity, dew point and wet bulb temperature.
• 【Wide Measurement Range】Humidity: 0 to 100% RH; Temperature: -22°F to 212°F(-30°C to 100 °C)
• 【Fast Response】Only 10s response time. It can display accurate temperature humidity value quickly. With backlight, you can get clearly readings even in the darkness.
• 【Widely Application】This handheld digital psychrometer can be widely used in home, apartment, industrial, laboratory, greenhouse, warehouse and aquaculture.
• 【Power Supply】9V battery included in the package.

User questions & answers

Question:	Is this useful for detecting ghosts or other paranormal entities
Answer:	These meters were used to measure actual ambient temperatures, we were not capturing temperature changes associated with paranormal presence.
Question:	Can this be used for in duct measurements
Answer:	I have not used it yet, but yes you can use this for duct measurements.
Question:	Can Auto-shutoff be disabled
Answer:	That’s a good Question. Press the “hold/backlight” button, hold on and press the “power” button, After the full display appears, release both buttons. The unit will not auto power off now.
Question:	which temperature / humidity sensor does the mengshen m350 use (e.g sensirion sht30-dis
Answer:	Sorry. I don't know that.

Product features

Mengshen Portable 2 in 1 Humidity and Temperature Meter M350

Thanks for coming, you deserve the best! This is Mengshen's Portable 2 in 1 Humidity and Temperature Meter M350.

It can accurately measure any environments temperature, relative humidity (RH), dew point, wet bulb temperature.

 

MINI& PORTABLE

Temperature & Humidity Dual Display

Other Features

One-Press Unit Switch

Simple switch between Degrees Fahrenheit and degrees Celsius.

9V battery which is included. Device will power off automatically to save battery when not in use in 15 minutes.

• --Digital humidity and temperature meter digital hygrometer used for a high range of applications-HVAC,industry,agriculture,meteorology,medical,daily life,building engineer,paranormal investigator,in wine cellar ,machine room, in living and office area, traffic environment and data storeroom
• --Professional and accuracy thermometer and hygrometer outdoor thermometer,Fast Response Time , High Accuracy and Performance ; ABS Plastic, Dust & Splash Proof, Durable and Useful
• --Dual Display Humidity and Temperature with Accurate Measuring temperature and humidity monitor, the temperature range is -20~+60℃, humidity range is 0 to 100%RH; Measure the temperature and humidity in various environment. Three types temperature mode: ambient temperature , dew-point temperature and wet bulb temperature
• --The new type of digital temperature and humidity moisture meter is designed to combine the functions of humidity meter, temperature meter, wet bulb temperature and dew point temperature. And Dew point is a measure of how much water vapor actually in the air. Perfect for HVAC,indoor air quality (IAQ) and environmental applications
• --Hold the current measurement data, one button freely switch between humidity and temperature. LCD display with backlight with SHT11 sensor, LCD brighter in the darker places, with an auto power off function

Product features

Product Specification

Multifunctional “℃/℉/RH%” button You can select humidity or temperature display at a LCD screen. You can also switch easily between Celsius and Fahrenheit when the screen show the temperature. Ambient and WB Range: -20 to 60°C (-4 to 140°F) Precision: ±1.0°C (0 to 45°C) ±1.5°C(-20 to 0°C,45 to 60°C) Resolution: 0.1°C/°F DP Range: -50 to 60°C (-58 to 140°F) precision : ±1.0°C (0 to 45°C) ±1.5°C(-50 to 0°C,45 to 60°C) Resolution: 0.1°C/°F RH Range: 0 to 100%RH Accuracy : ±3.0% RH(20% to 80%) ±4.0% RH(0% to 20%,80% to 100%) Resolution: 0.1%

Widely Applications

Use to check the plants’ living condition, when planting flowers and trees/Keep track of bad moister on sound equipment which can harm electronics/Check the performance of heating and air conditioning equipment accurately by building engineer/Keep careful track of the humidity in wine cellar/Wonderful meter for ghost hunters or paranormal investigator.

Update rate: 400ms sensor's type: High-Precision digital sensor(SHT11) Data Hold: √ Display Back Light: √ MAX/MIN: √ Data Logging up to 99 groups

Package included:

• 1 X Digital Thermometer
• 1 X English manual
• 1 X Meter Bag
• 1X Back clip with screw hole