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Amprobe TH-1 Compact Probe Style Relative Humidity Meter

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Specifications for this item
Number of Items
Overall Height
60  millimeters
Overall Width
85  millimeters
Part Number
Temperature Range
-10/60  Degrees Fahrenheit
Brand Name
One Year Limited Warranty
Liquid Crystal Display (LCD)
Overall Length
130  millimeters

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Key Features

  • Power Consumption: <2.0mA
  • Sensor: Electronic Capacitance Polymer Film Sensor
  • Range Relative Humidity: 0 to 100%
  • Range Temperature: -20 to 50°C (-4 to 122°F)
  • Accuracy Relative Humidity: ±3%RH from 10 to 95%RH, +5%RH (0 to 10, 95 to 100%RH) @ 25°C (77°F) non-condensing
  • Relative humidity (RH), temperature, wet bulb, and dew point meter 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 and maximum temperature readings
  • Protective cover over sensor

Package Details

Shipping Weight: 0.25 pounds
Package Size: 9.1 x 3.5 x 0.6 inches

Product Description

The Amprobe TH-1 relative humidity (RH) and temperature meter simultaneously measures relative humidity, dew point, and wet- and dry-bulb temperature to provide dual-scale readings in F and C, and is used for HVAC, indoor air quality, and environmental applications. The capacitive humidity sensor measures RH from 0 to 100 percent. The extended probe has a cover to protect the sensor when taking measurements inside ducts. The meter has minimum, maximum, and hold functions for recording data, and relative zero functionality stores reference points. It requires one 9V battery (included), and includes a carrying bag, and instructions.


Temperature range -4 to 122 degrees F (-20 to 50 degrees C)
Temperature accuracy + or - 1 degree F (0.6 degree C)
RH accuracy + or - 4 percent from 10 to 95 percent RH, and + or - 5 percent at all other readings
Wet bulb range 23 to 139.8 degrees F (-5 to 59.9 degrees C)
Wet bulb accuracy + or - 1 degree F (0.6 degree C)
Dew point range -4 to 139.8 degrees F (-20 to 59.9 degrees C)
Dew point accuracy + or - 1 degree F (0.6 degree C)
Resolution 0.1 percent, 0.1 degree (F or C)
Sensor hysteresis + or - 1 percent RH
Operating environment at less than 80 percent relative humidity 32 to 104 degrees F (0 to 40 degrees C)
Storage environment (with battery removed) at less than 70 percent relative humidity 14 to 140 degrees F (-10 to 60 degrees C)
Dimensions 6.89 x 1.65 x 0.63 inches (175 x 42 x 16 mm) (H x W x D)
Weight Approximately 6.4 oz. (180g)
Standards met EN 50081-1/1992 : EN 55022, EN 50082-1/1997 : EN 55024, (EN 61000-4-2/-3/-8, ENV 50204)

H is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.

A thermohygrometer is a combination thermometer to measure temperature, and hygrometer to measure humidity. It monitors relative humidity and temperature in lab, office, home, and greenhouse applications

Amprobe manufactures electrical testing equipment for commercial, industrial, and home use. The company was founded in 1948 and is headquartered in Everett, WA

What’s in the Box?

  • TH-1 relative humidity meter
  • CR2032 battery
  • Instructions

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