Support Center

Temperature & Humidity - Humidity Meters

All Products (61) Grid view Grid view List View List View

Extech 42270
Extech 42270

Temperature/Humidity Datalogger

The Extech 42270 is an additional Humidity and Temperature Datalogger for use with the 42275 and 42276 kits. The datalogger measures temperature from -40°C to 85°C (-40°F to 185°F) and relative humidity from 0% to 100%. It can record up to 8000 readings of each parameter. This meter has a programmable sample rate of 1 second to 12 hours plus a high and low alarm. A 42275 or 42276 kit is required to connect the datalogger to a PC for programming and data retrieval.

Extech 42275
Extech 42275

Temperature/Humidity Datalogger Kit with PC Interface

The Extech 42275 is a Temperature/Humidity Datalogger Kit with PC Interface. This waterproof (IP65) datalogger records up to 16,000 readings (8,000 readings for each parameter) with a date/time stamp that can be downloaded to your PC for analysis. Temperature and humidity can be viewed on the datalogger's LCD display. Data can be downloaded from a docking station, which can add additional loggers. Programmable sampling rate from 1 second to 2 hours plus Hi/Lo limits with alarm indication. Product comes complete with docking station, software, and one 42270 datalogger with Li-Ion battery.

Extech 42280
Extech 42280

Temperature and Humidity Datalogger

The 42280 is an Extech Temperature and Humidity Data logger. Data logs up to 16,000 readings. Featuring a USB interface for downloading to a PC. Triple LCD displays humidity, temperature and date (year, month and day). Temperature range from -4 to 144°F (-20 to 70°C). Complete with Windows compatible software, USB cable, Universal AC adaptor, and four AA batteries.

Extech 42280A
Extech 42280A

Temperature and Humidity Datalogger

The Extech 42280A is designed to continuously monitor temperature and humidity so you can maintain ideal storage conditions in laboratories and cleanrooms while ensuring comfort in hospitals and other indoor working facilities. This datalogger with max/min mode records up to 24,000 data sets including date and time stamp and features both audible and visible alarms. You can generate PDF reports that show trending graphs, or export data to a Microsoft® Excel spreadsheet, making it easy to identify irregularities in temperamental environments.

Extech 44550
Extech 44550

Pocket Humidity/Temperature Pen

The Extech 44550 is a pen style humidity and temperature meter. It features a dual LCD for simultaneous display of relative humidity and temperature (°C/°F switchable). This temperature pen measures humidity from 20% RH to 90% RH ± 5% RH and temperature from -10°C to 50°C ± 1°C (14°F to 122°F ± 2°F). It is pocket sized for quick and reliable measurements at any location. The max/min memory functions for display of highest and lowest readings for both measurements. Complete with pocket clip and one LR44 button battery.

Extech 445580
Extech 445580

Humidity/Temperature Pen

Take this this handy humidity and temperature gauge on the go and rely on a long-lasting 3V lithium battery for maximum usage time. The slim Extech 445580 humidity/temperature pen will capture humidity readings from 10 to 90% RH and register temperatures from -10°C to 50°C (14°F to 122°F). This utility tool is ideal for field work, storing maximum and minimum readings until the memory is cleared and includes a data-hold button for rapidly fluctuating measurements. The meter comes complete with a pocket clip and 3V lithium battery.

Extech 445702
Extech 445702

Hygro-Thermometer Clock

The Extech 445702 combines 3 displays for time, temperature and humidity. The clock displays both 12 and 24 hour time. Includes a maximum/minimum with reset function. Humidity measures 10% RH to 85% RH ± 6% RH, and temperature measures -10°C to 60°C ± 1°C (14°F to 140°F ± 1.8°F). Complete with built-in tilt stand, wall mounting bracket, and AAA battery.

Extech 445703
Extech 445703

Big Digit Hygro-Thermometer

This Big Digit Hygro-Thermometer has 1 in. digits on a super large LCD. It simultaneously displays humidity from 10 to 99% and temperature from 14 to 140°F or -10 to 60°C. Accuracy is ±5%RH and ±1.8°F/±1°C. Maximum/minimum with reset function. Complete with stand, wall mounting bracket and 1 AAA battery.

Extech 445713
Extech 445713

Big Digit Indoor/Outdoor Hygro-Thermometer

The Extech Big Digit Hygro-Thermometer simultaneously displays indoor and outdoor temperature and humidity. It measures humidity from 10% RH to 99% RH ± 5% RH and temperature from -10°C to 60°C ± 1°C (14°F to 140°F ± 1.8°F). A max/min with reset function stores and recalls high and low measurements for all 4 parameters. Complete with built-in stand, wall mounting bracket, outdoor sensor with 89 cm (35 in) cable, and 1.5 V AAA battery.

Extech 445713-TP
Extech 445713-TP

Big Digit Indoor/Outdoor Hygro-Thermometer

The Extech 445713-TP is a Big Digit Hydro-Thermometer which simultaneously displays indoor and outdoor temperature along with humidity. The meter features selectable temperature units, min/max memory with reset, and wall-mount or desktop options. Measures from -50°C to 70°C (-58°F to 158°F). Complete with built-in stand, wall mounting bracket, remote outdoor sensor with 3 m (9.75 ft) cable and a 1.5 V AAA battery.

Extech 445715
Extech 445715

Big Digit Hygro-Thermometer with Remote Probe

This Extech Big Digit Hygro-Thermometer has an extendable probe with a 45.7 cm (18 in) cable. It measures humidity from 10% RH to 99% RH ± 4% RH and temperature from -10°C to 60°C ± 1°C (14°F to 140°F ± 1.8°F). This meter also includes maximum/minimum and rest functions, as well as having a rear calibration adjustment post with optional RH calibration bottles. Comes complete with built-in stand, mounting bracket, sensor, and 1 AAA battery.

Extech 445814
Extech 445814

Hygro-Thermometer Humidity Alert with Dew Point

The Extech 445814 Humidity Alert Hygro-Thermometer has a programmable % RH audible and visual alarm that alerts you when humidity exceeds the set limit. A large LCD simultaneously displays temperature, humidity, and dew point. This product measures humidity from 10% RH to 99% RH ± 4% RH and temperature from -10°C to 60°C ± 1°C (14°F to 140°F ± 1.8°F). Rear calibration pot for humidity and temperature. Featuring maximum/minimum with reset functions that store and recall the highest and lowest readings recorded. Comes complete with built-in stand, wall bracket and one AAA battery.

Extech 445815
Extech 445815

Hygro-Thermometer Humidity Alert with Dew Point

This Humidity Meter with Alarm and Remote Probe features a large triple display of relative humidity, temperature and dew point. Has a built-in stand for sitting on a desk but can also be mounted to a wall with included bracket. A visual and audible alarm warns when the humidity level goes above or below the adjustable set point. Meter also stores the maximum and minimum readings. Remote probe extends 18 in. for measuring behind walls. Ideal for use in humid areas where mold can become a problem. Comes complete with built-in stand, wall mount bracket, and 2 AAA batteries.

Extech EA20
Extech EA20

EasyView™ Hygro-Thermometer

The Extech EA20 is a Hygro-Thermometer that measures relative humidity, temperature, dew point, and wet bulb. Its large LCD can display any two of these parameters simultaneously. The min/max function stores and recalls highest and lowest readings. Additional functions include a programmable auto power off time frame, switchable °C/°F temperature units, data hold, auto power off, and a low battery and over-range indication. Complete with built-in stand, protective holster, probe sensor with 1 m (39 in) coiled cable, and 6 AAA batteries.

Extech EA25
Extech EA25

EasyView™ Hygro-Thermometer and Datalogger

The Extech EA25 Hygro-Thermometer and Datalogger datalogs up to 15,000 records for PC download. Display any two parameters like temperature, humidity, dew point, or wet bulb simultaneously. The min/max function stores and recalls the highest and lowest readings, while also displaying the elapsed time to the minimum and maximum readings. The EA25 comes with a programmable auto power off, switchable °C/°F temperature units, and a data hold function that freezes readings on display. Complete with built-in stand, protective holster, probe with 1 m (39 in) coiled cable, software and optically isolated RS-232 cable, and 6 AAA batteries.

Extech HD500
Extech HD500

Psychrometer with InfraRed Thermometer

The HD500 Psychrometer with Infrared Thermometer combines 3 in 1 with humidity meter, type K thermometer and infrared thermometer functions. The HD500 features a large triple LCD backlit display, built in USB port, minimum/maximum, data hold and auto power off functions. Built-in InfraRed Thermometer for non-contact temperature measurement to 932°F (500°C). Includes a 3 year warranty, Windows compatible software with USB cable, Type K bead wire probe, carrying case and 9-volt battery.

Extech RH-Cap
Extech RH-Cap

Replacement caps

Replacement protective caps for models RH390, RH490, MO Series, and HD500: 5 Pack

Extech RH-Screen
Extech RH-Screen

Replacement vented caps

Replacement vent cap for Models RH390, RH490, HD500, and HD550: 5 pack

Extech RH10
Extech RH10

Pocket Series Hygro-Thermometer

The Extech RH10 is a Pocket Series Hygro-Thermometer with an automatic LCD backlight and double molded grip. The meter measures relative humidity from 0% RH to 100% RH, temperature from -20°C to 60°C (-4°F to 140°F), and records max/min readings. This product is complete with a 9 V battery and built in sensor.

Extech RH101
Extech RH101

Hygro-Thermometer + InfraRed Thermometer

This Combination Humidity meter plus Infrared Thermometer features a large backlit LCD with Primary and Secondary displays. Primary display is user selectable for IR or Humidity; Secondary always displays ambient temperature. Infrared thermometer has built-in laser pointer and an 8:1 distance to target ratio. Data Hold and MAX, Auto power off. Complete with 9V battery and carrying case.

Extech RH200W
Extech RH200W

Multi-Channel Wireless Hygro-Thermometer

Extech’s RH200W Multi-Channel Wireless Hygro-Thermometer displays indoor temperature and humidity levels. You can connect up to eight wireless transmitters to remotely measure temperature and humidity levels up to 30 m (98 ft) away. The LCD displays icons that indicate indoor comfort levels as well as trending arrows that show the increase, decrease, or constant readings. It also records min/max measurements for the duration of each measurement session. Ideal for multi-room environmental monitoring for restaurants, manufacturing facilities, offices, homes, greenhouses, and storage/archive buildings.

Extech RH200W-T
Extech RH200W-T

Wireless Hygro-Thermometer Transmitter

Extech's RH200W-T is a Wireless Hygro-Thermometer Transmitter for the RH200W. You can connect up to 8 wireless transmitters to remotely measure temperature and humidity levels up to 30 m (98 ft) away. Ideal for multi-room environmental monitoring for restaurants, manufacturing facilities, offices, homes, greenhouses, and storage/archive buildings.

Extech RH210
Extech RH210

Compact Hygro-Thermometer

The RH210 is a Hygro-Thermometer that measures Relative Humidity, Temperature and Dew Point. This compact hydro-thermometer is ideal for many industrial or residential applications. Complete with probe and 39" (1m) cable, 9V battery and soft case.

Extech RH30
Extech RH30

Hygro-Thermometer with Humidity Alert

The Extech RH30 Hygro-Thermometer simultaneously measures and displays temperature, relative humidity, and dew point. It allows building managers and homeowners to monitor moisture content in the air in order to prevent mold growth. For mold that thrives in moist conditions and may be found in damp basements, closets, bathrooms, food storage areas, and other interior locations. Comes with desktop stand, two AA batteries, and user manual.

View More