Humidity Testers | McMaster-Carr

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100 Products

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Temperature and Humidity Meters

Set on a tabletop to measure indoor temperature and humidity

2 products

Remote-Reading Handheld Temperature and Humidity Meters

Reach into hard-to-access areas to check humidity, temperature, and dew point

1 product

Remote-Reading Temperature and Humidity Meters

Monitor temperature and humidity both indoors and outdoors with the wireless sensor

1 product

Pocket Temperature and Humidity Meters with Calibration Certificate

No bigger than a pen for temperature and humidity readings on the go

1 product

Handheld Temperature and Humidity Meters

Measure a wider temperature and humidity range than pocket meters

2 products

Remote-Reading High-Accuracy Temperature and Humidity Meters with Calibration Certificate

More accurate than other remote meters for precise indoor readings

1 product

Remote-Reading Wall-Mount Temperature and Humidity Meters

Snake the probe outside to measure outdoor temperature in addition to indoor conditions

1 product

Through-Wall-Mount Temperature and Humidity Meters

Monitor humidity, temperature, and dew point inside sealed containers

1 product

Easy-Read Wall-Mount Temperature and Humidity Meters with Accuracy Certificate

The largest dial meters we offer to view temperature and humidity at a glance

3 products

Other Products

Humidity-Indicating Cards

Check humidity levels of moisture-sensitive inventory and equipment at a glance

9 products

Thickness Gauges

Move the thumb lever to quickly check the thickness of flat stock, pipe, or tubing

6 products

Humidity Controllers

Monitor humidity and control it by automatically turning equipment on and off

2 products

Data Recorder Charts

Place in temperature and humidity data recorders to document readings over time

3 products

Humidistats

Control the humidity in an enclosure or space

6 products

Humidity-Indicating Plugs

Monitor humidity in sealed containers without opening them, protecting the inside from contamination

6 products

Barometers

Measure atmospheric pressure changes

5 products

Data Recorders

Log temperature, humidity, or pressure levels to track changes and troubleshoot your system

9 products

Heat Stress Monitors

Measure temperature, humidity, and radiant heat to keep people safe from heat-related hazards

9 products

Thermometers

Monitor temperature in tanks, pipes, control panels, and other equipment

4 products

Development Board Sensor Modules

Transform your development board into everything from an airflow monitor to a motion detector

3 products

Humidity Meters

Measure relative humidity without complex calculations

4 products

Temperature and Humidity Transmitters

Regulate heating and cooling by sending temperature and humidity levels to PLCs and controllers

3 products

Weather Stations

Measure multiple weather conditions at the same time

9 products

Electrical Resistance Meters

Prevent damage to electronics by checking that surfaces won't discharge static electricity

4 products

Water Detectors

Place near tanks, sump pumps, and pipe lines to alert you to water leaks

2 products