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| Best Seller  | EXTECH HW30 Heat Index Stopwatch,Relative Humidity Heat Index Digital Stopwatch, Accuracy +/-5 Seconds Per Day, Features Adjustable Heat Index Alarm, Displays Temperature and Humidity, Count Direction Count Down, Digital Display Screen Type LCD, Maximum Time Capacity 9 hrs, 59 minutes, 59 seconds,... ... more
EXTECH HW30 Heat Index Stopwatch,Relative Humidity Heat Index Digital Stopwatch, Accuracy +/-5 Seconds Per Day, Features Adjustable Heat Index Alarm, Displays Temperature and Humidity, Count Direction Count Down, Digital Display Screen Type LCD, Maximum Time Capacity 9 hrs, 59 minutes, 59 seconds,... | go to store |
 | EXTECH HD500 Relative Humidity Meter,w/IR Thermometer Psychrometer with Infrared Thermometer, With Infrared Thermometer, 0 to 100 Percent Relative Humidity Range, +/-2 Percent Humidity Accuracy, Air 14 Degrees to 140 Degrees F, Probe -148 to 2501 Temp. Range (F), +/-4 Degrees Temp. Accuracy (F), -6.88... ... more
EXTECH HD500 Relative Humidity Meter,w/IR Thermometer Psychrometer with Infrared Thermometer, With Infrared Thermometer, 0 to 100 Percent Relative Humidity Range, +/-2 Percent Humidity Accuracy, Air 14 Degrees to 140 Degrees F, Probe -148 to 2501 Temp. Range (F), +/-4 Degrees Temp. Accuracy (F), -6.88... | go to store |
| Best Seller  | EXTECH RH300-CAL Humidity Calibrtn Kit,33 per RH & 75 RH Humidity Calibration Kit, Relative Humidity Accuracy +/-3 Percent, Number of Pieces 2, Compatible Manufacturer Model Number 445815, Product Type Humidity Meter Calibration Kit, Sample Humidity 33 Percent, 75 Percent, Includes 33 Percent and 75 Percent... ... more
EXTECH RH300-CAL Humidity Calibrtn Kit,33 per RH & 75 RH Humidity Calibration Kit, Relative Humidity Accuracy +/-3 Percent, Number of Pieces 2, Compatible Manufacturer Model Number 445815, Product Type Humidity Meter Calibration Kit, Sample Humidity 33 Percent, 75 Percent, Includes 33 Percent and 75 Percent... | $69.79 $66.29 go to store |
 | Extech Instruments Humidity Alert Big Digit With Nist Certificate 445815-NIST Extech Instruments Humidity Alert Big Digit With Nist Certificate 445815-NIST. Designed to help prevent moisture damage in your home or place of business these Tools by Extech Instruments will help you measure relative humidity and temperature in one... ... more | FREE shipping go to store |
 | Taylor 497J Wall Thermometer w/ Relative Humidity Scale, -60 to 120 F Degrees, Red The Specialty Thermometers by Taylor: Wall Thermometer, humiguide, 12 diameter, -60 to 120F (-50 to 50 C) temperature range, metal construction, large face, includes relative humidity scale ( Taylor - 497J ) - The Taylor 497J wall thermometer is a... ... more | $31.41 $13.99 go to store |
 | Extech Instruments Humidity/Temperature Datalogger w/NIST SD500-NIST Extech Instruments Humidity/Temperature Datalogger w/NIST SD500-NIST. It features a Dual LCD that simultaneously displays Relative Humidity and Temperature and a selectable data sampling rate of 5 10 30 60 120 300 and 600 seconds. Each stored reading... ... more | FREE shipping go to store |
 | Extech Instruments Humidity and Temperature Datalogger SD500 Extech Instruments Humidity and Temperature Datalogger SD500. It features a Dual LCD that simultaneously displays Relative Humidity and Temperature and a selectable data sampling rate of 5 10 30 60 120 300 and 600 seconds. Each stored reading includes... ... more | FREE shipping go to store |
 | Maximum Weather Instruments Stratus Humidity Instrument | 7 H x 7 W x 3 D in | Wayfair STB A remote-reading electronic hygrometer displays outside relative humidity over a scale of 0-100%. A user-adjustable needle at the center of the relative humidity instrument allows you to observe changes in relative humidity. Color: Brass/Black |... ... more | FREE shipping go to store |
 | Maximum Weather Instruments Stratus Humidity Instrument | 7 H x 7 W x 3 D in | Wayfair STAN A remote-reading electronic hygrometer displays outside relative humidity over a scale of 0-100%. A user-adjustable needle at the center of the relative humidity instrument allows you to observe changes in relative humidity. Color: Nickel/Silver |... ... more | $595.00 $529.99 FREE shipping go to store |
 | Maximum Weather Instruments Stratus Humidity Instrument | 7 H x 7 W x 3 D in | Wayfair STBN A remote-reading electronic hygrometer displays outside relative humidity over a scale of 0-100%. A user-adjustable needle at the center of the relative humidity instrument allows you to observe changes in relative humidity. Color: Nickel/Black |... ... more | FREE shipping go to store |
 | La Crosse Blue Analog Thermometer and Humidity Gauge The La Crosse Technology® Indoor Temperature and Humidity Gauge is a dual-gauge indoor thermometer that measures temperatures from -0°F to 120°F (-20°C to 50°C), and humidity from 10% to 90% relative humidity. ... more | FREE shipping go to store |
 | Cooper 212-150-8 Wall Dial Thermometer, -40 To 120 Degrees F The Specialty Thermometers by Cooper: Wall Thermometer, 12 dia. dial, temperature range -40 to 120F (-40 to 50C), +/-3For 30F to 90F and+/-5F all other, horizontal numbers, 0% to 100% relative humidity ( Cooper - 212-150-8 ) ... more | $58.18 $41.56 go to store |
 | Autopilot APCEM2 Hydroponic Gardening CO2 RH Temperature Monitor and Data Logger - 1 Monitoring stats such as carbon dioxide, temperature, and relative humidity are imperative to growing healthy, strong plants in an indoor gardening system such as a grow room or greenhouse. ... more | FREE shipping go to store |
 | LASCAR EL-SIE-6+ Temperature Humidity Meter,Data Logging Temperature Humidity Data Logger, AC Voltage Accuracy Not Applicable, Current Channels Not Applicable, Maximum Dew Point Measured Not Applicable, Minimum Dew Point Measured Not Applicable, Maximum AC Current Measurement Not Applicable, Maximum Relative... ... more
LASCAR EL-SIE-6+ Temperature Humidity Meter,Data Logging Temperature Humidity Data Logger, AC Voltage Accuracy Not Applicable, Current Channels Not Applicable, Maximum Dew Point Measured Not Applicable, Minimum Dew Point Measured Not Applicable, Maximum AC Current Measurement Not Applicable, Maximum Relative... | go to store |
 | LASCAR EL-SIE-2 Temperature Humidity Meter,Data Logging Temperature Humidity Data Logger, AC Voltage Accuracy Not Applicable, Current Channels Not Applicable, Maximum Dew Point Measured Not Applicable, Minimum Dew Point Measured Not Applicable, Maximum AC Current Measurement Not Applicable, Maximum Relative... ... more
LASCAR EL-SIE-2 Temperature Humidity Meter,Data Logging Temperature Humidity Data Logger, AC Voltage Accuracy Not Applicable, Current Channels Not Applicable, Maximum Dew Point Measured Not Applicable, Minimum Dew Point Measured Not Applicable, Maximum AC Current Measurement Not Applicable, Maximum Relative... | go to store |
 | REED INSTRUMENTS R9980 Humidity Calibration Kit (33% and 75%) Humidity Calibration Kit, Relative Humidity Accuracy +/-1 Percent at 77 Degrees F, Number of Pieces 2, Compatible Probe Diameter Up to 0.6 in, Compatible Manufacturer Model Number 8706, R6001, R6200, R9900, SD-3007, Product Type Humidity Meter... ... more
REED INSTRUMENTS R9980 Humidity Calibration Kit (33% and 75%) Humidity Calibration Kit, Relative Humidity Accuracy +/-1 Percent at 77 Degrees F, Number of Pieces 2, Compatible Probe Diameter Up to 0.6 in, Compatible Manufacturer Model Number 8706, R6001, R6200, R9900, SD-3007, Product Type Humidity Meter... | $142.99 $124.99 go to store |
 | Maximum Weather Instruments Stratus Humidity Instrument | 7 H x 7 W x 3 D in | Wayfair STAC A remote-reading electronic hygrometer displays outside relative humidity over a scale of 0-100%. A user-adjustable needle at the center of the relative humidity instrument allows you to observe changes in relative humidity. Color: Chrome/Silver |... ... more | FREE shipping go to store |
 | Maximum Weather Instruments Stratus Humidity Instrument | 7 H x 7 W x 3 D in | Wayfair STAN A remote-reading electronic hygrometer displays outside relative humidity over a scale of 0-100%. A user-adjustable needle at the center of the relative humidity instrument allows you to observe changes in relative humidity. Color: Nickel/Silver |... ... more | $595.00 $529.99 FREE shipping go to store |
 | Maximum Weather Instruments Stratus Humidity Instrument | 7 H x 7 W x 3 D in | Wayfair STBC A remote-reading electronic hygrometer displays outside relative humidity over a scale of 0-100%. A user-adjustable needle at the center of the relative humidity instrument allows you to observe changes in relative humidity. Color: Chrome/Black |... ... more | FREE shipping go to store |
 | Maximum Weather Instruments Stratus Humidity Instrument | 7 H x 7 W x 3 D in | Wayfair STA A remote-reading electronic hygrometer displays outside relative humidity over a scale of 0-100%. A user-adjustable needle at the center of the relative humidity instrument allows you to observe changes in relative humidity. Color: Brass/Silver |... ... more | FREE shipping go to store |
 | The SRS100LX temperature and humidity radiation shield is a low cost solution for protecting temperature and relative humidity sensors. It consists of nine molded plastic plates and a UV inhibited ABS plastic mounting arm. The wedge-shaped plates... ... more | FREE shipping go to store |
 | The La Crosse Technology® Indoor Temperature and Humidity Gauge is a dual-gauge indoor thermometer that measures temperatures from -0°F to 120°F (-20°C to 50°C), and humidity from 10% to 90% relative humidity. Humidity plays a big role in comfort, so... ... more | go to store |
 | EXTECH RH101 Hygro-Thermometer,w/IR Thermometer Relative Humidity Meter, With Infrared Thermometer, 10 to 95 Percent Relative Humidity Range, +/-3.5 Percent Humidity Accuracy, -4 Degrees to 140 Degrees F Temp. Range (F), +/-3 Degrees Temp. Accuracy (F), 0.1 Percent Humidity Resolution, Sensor Type... ... more
EXTECH RH101 Hygro-Thermometer,w/IR Thermometer Relative Humidity Meter, With Infrared Thermometer, 10 to 95 Percent Relative Humidity Range, +/-3.5 Percent Humidity Accuracy, -4 Degrees to 140 Degrees F Temp. Range (F), +/-3 Degrees Temp. Accuracy (F), 0.1 Percent Humidity Resolution, Sensor Type... | go to store |
 | YELLOW JACKET 69008 Temp/Humdty Meter,0 to 100 Rel Hum Rnge Hygro Thermometer Psychrometer, Temperature and Humidity, 0 to 100 Percent Relative Humidity Range, +/-3 Percent Humidity Accuracy, -4 Degrees to 122 Degrees Temp. Range (F), +/-1 Degrees Temp. Accuracy (F), -69 Degrees to 122 Degrees F Wet Bulb... ... more
YELLOW JACKET 69008 Temp/Humdty Meter,0 to 100 Rel Hum Rnge Hygro Thermometer Psychrometer, Temperature and Humidity, 0 to 100 Percent Relative Humidity Range, +/-3 Percent Humidity Accuracy, -4 Degrees to 122 Degrees Temp. Range (F), +/-1 Degrees Temp. Accuracy (F), -69 Degrees to 122 Degrees F Wet Bulb... | go to store |
 | AMPROBE TH-1 Temp/Humdty Mtr,0 to 100 per Rel Hum Rng Temperature Humidity Meter, 0 to 100 Percent Relative Humidity Range, +5 Percent, +/-3 Percent Humidity Accuracy, -4 Degrees to 122 Degrees F Temp. Range (F), +/-1 Degrees F Temp. Accuracy (F), 32 Degrees F to 131 Degrees F Wet Bulb Temperature Range,... ... more
AMPROBE TH-1 Temp/Humdty Mtr,0 to 100 per Rel Hum Rng Temperature Humidity Meter, 0 to 100 Percent Relative Humidity Range, +5 Percent, +/-3 Percent Humidity Accuracy, -4 Degrees to 122 Degrees F Temp. Range (F), +/-1 Degrees F Temp. Accuracy (F), 32 Degrees F to 131 Degrees F Wet Bulb Temperature Range,... | go to store |
 | EXTECH 445580 Temp/Humdty Mtr,10 to 90 per Rel Hum Rng Temperature Humidity Meter, Pen, 10 to 90 Percent Relative Humidity Range, +/-5 Percent Humidity Accuracy, 14 Degrees to 122 Degrees F Temp. Range (F), +/-1.8 Degrees F Temp. Accuracy (F), 0.1 Percent Humidity Resolution, Sensor Type Capacitance,... ... more
EXTECH 445580 Temp/Humdty Mtr,10 to 90 per Rel Hum Rng Temperature Humidity Meter, Pen, 10 to 90 Percent Relative Humidity Range, +/-5 Percent Humidity Accuracy, 14 Degrees to 122 Degrees F Temp. Range (F), +/-1.8 Degrees F Temp. Accuracy (F), 0.1 Percent Humidity Resolution, Sensor Type Capacitance,... | go to store |
 | AMPROBE THWD-3 Temp/Humdty Mtr,0 to 100 per Rel Hum Rng Temperature Humidity Meter, 0 to 100 Percent Relative Humidity Range, +/-3 Percent Humidity Accuracy, -4 Degrees to 140 Degrees F Temp. Range (F), +/-1.6 Degrees F Temp. Accuracy (F), -4 Degrees to 140 Degrees F Wet Bulb Temperature Range, -4 Degrees... ... more
AMPROBE THWD-3 Temp/Humdty Mtr,0 to 100 per Rel Hum Rng Temperature Humidity Meter, 0 to 100 Percent Relative Humidity Range, +/-3 Percent Humidity Accuracy, -4 Degrees to 140 Degrees F Temp. Range (F), +/-1.6 Degrees F Temp. Accuracy (F), -4 Degrees to 140 Degrees F Wet Bulb Temperature Range, -4 Degrees... | go to store |
 | EXTECH RH390 Temp/Humdty Mtr,0 to 100 per Rel Hum Rng Psychrometer, 0 to 100 Percent Relative Humidity Range, +/-2 Percent Humidity Accuracy, -22 Degrees to 199 Degrees F Temp. Range (F), +/-1.8 Degrees F Temp. Accuracy (F), 32 Degrees to 176 Degrees F Wet Bulb Temperature Range, -22 Degrees to 199... ... more
EXTECH RH390 Temp/Humdty Mtr,0 to 100 per Rel Hum Rng Psychrometer, 0 to 100 Percent Relative Humidity Range, +/-2 Percent Humidity Accuracy, -22 Degrees to 199 Degrees F Temp. Range (F), +/-1.8 Degrees F Temp. Accuracy (F), 32 Degrees to 176 Degrees F Wet Bulb Temperature Range, -22 Degrees to 199... | go to store |
 | EXTECH RH300 Temp/Humdty Mtr,0 to 100 per Rel Hum Rng Hygro Thermometer Psychrometer, 0 to 100 Percent Relative Humidity Range, +/-3 Percent Humidity Accuracy, Air -4 Degrees to 122 Degrees F/ Probe -4 Degrees to 158 Degrees F Temp. Range (F), +/-1.8 Degrees F Temp. Accuracy (F), -6.9 Degrees to 122... ... more
EXTECH RH300 Temp/Humdty Mtr,0 to 100 per Rel Hum Rng Hygro Thermometer Psychrometer, 0 to 100 Percent Relative Humidity Range, +/-3 Percent Humidity Accuracy, Air -4 Degrees to 122 Degrees F/ Probe -4 Degrees to 158 Degrees F Temp. Range (F), +/-1.8 Degrees F Temp. Accuracy (F), -6.9 Degrees to 122... | go to store |
 | EXTECH RH490 Temp/Humdty Mtr,0 to 100 per Rel Hum Rng Hygro Thermometer, 0 to 100 Percent Relative Humidity Range, +/-2 Percent Humidity Accuracy, -22 Degrees to 199 Degrees F Temp. Range (F), +/-1.8 Degrees F Temp. Accuracy (F), 32 Degrees to 176 Degrees F Wet Bulb Temperature Range, -22 Degrees to 199... ... more
EXTECH RH490 Temp/Humdty Mtr,0 to 100 per Rel Hum Rng Hygro Thermometer, 0 to 100 Percent Relative Humidity Range, +/-2 Percent Humidity Accuracy, -22 Degrees to 199 Degrees F Temp. Range (F), +/-1.8 Degrees F Temp. Accuracy (F), 32 Degrees to 176 Degrees F Wet Bulb Temperature Range, -22 Degrees to 199... | go to store |
 | TEST PRODUCTS INTERNATIONAL 597C1 Digital Psychrometer,-40 to 122F Range Hygro Thermometer Psychrometer, 0 Percent to 100 Percent Relative Humidity Range, +/-3 Percent Humidity Accuracy, -40 Degrees to 122 Degrees Temp. Range (F), +/-(0.5 Percent of reading + 2.0 Degrees F) Temp. Accuracy (F), 41 Degrees to 140 Degrees F (5... ... more
TEST PRODUCTS INTERNATIONAL 597C1 Digital Psychrometer,-40 to 122F Range Hygro Thermometer Psychrometer, 0 Percent to 100 Percent Relative Humidity Range, +/-3 Percent Humidity Accuracy, -40 Degrees to 122 Degrees Temp. Range (F), +/-(0.5 Percent of reading + 2.0 Degrees F) Temp. Accuracy (F), 41 Degrees to 140 Degrees F (5... | $258.99 $245.99 go to store |
 | EXTECH RHT10 Data Logger,USB Interface,Temp and RH Data Logger, AC Voltage Accuracy Not Applicable, Current Channels Not Applicable, Maximum Dew Point Measured 158 Degrees F, Minimum Dew Point Measured -40 Degrees F, Maximum AC Current Measurement Not Applicable, Maximum Relative Humidity Measured 100... ... more
EXTECH RHT10 Data Logger,USB Interface,Temp and RH Data Logger, AC Voltage Accuracy Not Applicable, Current Channels Not Applicable, Maximum Dew Point Measured 158 Degrees F, Minimum Dew Point Measured -40 Degrees F, Maximum AC Current Measurement Not Applicable, Maximum Relative Humidity Measured 100... | go to store |
 | EXTECH EN510 Environmental Meter,0.9 to 44.7 mph Environmental Meter, Environmental Sensor Type Relative Humidity Sensor, Air Velocity Range 0.4 to 20 m/s, 0.8 to 38.8 knots, 0.9 to 44.7 mph, 1.4 to 72 km/h, 80 to 3937 ft/min, Series Extech Environmental Meter, Dew Point Range -25.3 Degrees to 49.0... ... more
EXTECH EN510 Environmental Meter,0.9 to 44.7 mph Environmental Meter, Environmental Sensor Type Relative Humidity Sensor, Air Velocity Range 0.4 to 20 m/s, 0.8 to 38.8 knots, 0.9 to 44.7 mph, 1.4 to 72 km/h, 80 to 3937 ft/min, Series Extech Environmental Meter, Dew Point Range -25.3 Degrees to 49.0... | go to store |
 | KESTREL 0850LBLK Environmental Meter,LCD,Black w/WiFi Environmental Meter, Environmental Sensor Type Air Flow Sensor, Ambient Temperature Sensor, Compass, Pressure Sensor, Relative Humidity Sensor, Air Velocity Range 0.4 to 89 mph, 0.6 to 60 mps, 1.2 to 116.6 knots, 118 to 7874 fpm, 2.2 to 216 kph, Series... ... more
KESTREL 0850LBLK Environmental Meter,LCD,Black w/WiFi Environmental Meter, Environmental Sensor Type Air Flow Sensor, Ambient Temperature Sensor, Compass, Pressure Sensor, Relative Humidity Sensor, Air Velocity Range 0.4 to 89 mph, 0.6 to 60 mps, 1.2 to 116.6 knots, 118 to 7874 fpm, 2.2 to 216 kph, Series... | go to store |
 | KESTREL 0852HVG Environmental Meter,Hi-Vis Green,LCD Environmental Meter, Environmental Sensor Type Air Flow Sensor, Ambient Temperature Sensor, Pressure Sensor, Relative Humidity Sensor, Air Velocity Range 0.4 to 89 mph, 0.6 to 60 mps, 1.2 to 116.6 knots, 118 to 7874 fpm, 2.2 to 216 kph, Series 5200,... ... more
KESTREL 0852HVG Environmental Meter,Hi-Vis Green,LCD Environmental Meter, Environmental Sensor Type Air Flow Sensor, Ambient Temperature Sensor, Pressure Sensor, Relative Humidity Sensor, Air Velocity Range 0.4 to 89 mph, 0.6 to 60 mps, 1.2 to 116.6 knots, 118 to 7874 fpm, 2.2 to 216 kph, Series 5200,... | go to store |
 | KESTREL 0850BLK Environmental Meter,Blk,0.3 to 48.87" Hg Environmental Meter, Environmental Sensor Type Air Flow Sensor, Ambient Temperature Sensor, Compass, Pressure Sensor, Relative Humidity Sensor, Air Velocity Range 0.4 to 89 mph, 0.6 to 60 mps, 1.2 to 116.6 knots, 118 to 7874 fpm, 2.2 to 216 kph, Series... ... more
KESTREL 0850BLK Environmental Meter,Blk,0.3 to 48.87" Hg Environmental Meter, Environmental Sensor Type Air Flow Sensor, Ambient Temperature Sensor, Compass, Pressure Sensor, Relative Humidity Sensor, Air Velocity Range 0.4 to 89 mph, 0.6 to 60 mps, 1.2 to 116.6 knots, 118 to 7874 fpm, 2.2 to 216 kph, Series... | go to store |
 | ComfortMinder 7" Hygrometer by Maximum Weather Instruments | 7 H x 7 W x 3 D in | Wayfair CMA Tracks both inside temperature and relative humidity. Suitable for outside use in a protected location. Completely self-contained and suitable for outside use in certain protected locations. With no external wires or sensors, comfort under weather... ... more | $250.00 $227.97 FREE shipping go to store |
 | KESTREL 0855TAN Weather Meter,Desert Tan,0.3 to 48.87"Hg Weather Meter, Environmental Sensor Type Air Flow Sensor, Ambient Temperature Sensor, Compass, Pressure Sensor, Relative Humidity Sensor, Air Velocity Range 0.4 to 89 mph, 0.6 to 60 mps, 1.2 to 116.6 knots, 118 to 7874 fpm, 2.2 to 216 kph, Series 5500,... ... more
KESTREL 0855TAN Weather Meter,Desert Tan,0.3 to 48.87"Hg Weather Meter, Environmental Sensor Type Air Flow Sensor, Ambient Temperature Sensor, Compass, Pressure Sensor, Relative Humidity Sensor, Air Velocity Range 0.4 to 89 mph, 0.6 to 60 mps, 1.2 to 116.6 knots, 118 to 7874 fpm, 2.2 to 216 kph, Series 5500,... | go to store |
 | Extech Instruments Thermo-Anemometer Mini With Compass 45168CP Extech Instruments Thermo-Anemometer Mini With Compass 45168CP. Additional measurements include: Temperature Relative Humidity Dew Point Wet Bulb and Windchill. The built-in compass provides wind direction/ 360 readings and has an easy-to-use... ... more | FREE shipping go to store |
 | Extech Instruments 445815 W/Limited Nist - Single Point 445815-NISTL Extech Instruments 445815 W/Limited Nist - Single Point 445815-NISTL. Designed to help prevent moisture damage in your home or place of business these Tools by Extech Instruments will help you measure relative humidity and temperature in one fell... ... more | FREE shipping go to store |
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