Relative Humidity and Temperature Gauge RHT100

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Weight (without batteries):
4.02oz (114 grams)
Gauge Body Dimension:
10.23 x 1.9 x 1 in. (260 x 48.25 x 25.4 mm)
Flexible Probe Dimensions:
Length: 4.2 in. (107 mm) | Diameter: .38 in. (9.75 mm)
Fahrenheit (°F), Celcius (°C)
Gauge Operating Temperature:
-4 °F to 131 °F (-20 °C to 55 °C) *limited by battery performance
Storage Temperature:
-4 °F to 140 °F (-20 °C to 60 °C) *without batteries
Battery Type:
(2) AA Batteries-included
Battery Life:
Bluetooth On: 500 hours at 77 °F (25 °C) | Bluetooth Off: 1000 hours at 77 °F (25 °C)
Wireless Range:
1000 ft (305 m) *line of sight
Auto Power Off Time:
15 minutes (Selectable On/Off)
Sensor Response Time:
Temperature: 18 °F in 1 Second (32 °F to 158 °F)/10 °C in 1 Second (0 °C to 70 °C) | Relative Humidity: 20% RH 3-5 Seconds 40% to 80% RH at 77 °F (25 ° C)
Sensor Operating Range:
Temperature: -40 °F - 212 °F / -40 °C - 100 °C | Relative Humidity: 0% - 100% RH
Temperature: .1 °F / .1 °C | Relative Humidity: .1% RH
Temperature Sensor Accuracy:
±.9 °F (-40 °F to 32 °F) / ±.5 °C (-40 °C to 0 °C) | ±.36 °F (32 °F to 158 °F) / ±.2 °C (0 °C to 70 °C) | ±.9 °F (158 °F to 212 °F) / ±.5 °C (70 °C to 100 °C)
Relative Humidity Sensor Accuracy:
±4.5% RH <10% RH at 77 °F (25 °C) | ± 3.5 RH 10% to 20% RH at 77 °F (25 °C) | ±2.5% RH 20% to 80% RH at 77 °F (25 °C) | ± 3.5% RH >80% RH at 77 °F (25 °C)

Hyper-Accurate Temperature and Relative Humidity Measurements

Accurately measure relative humidity and ambient temperatures while quickly viewing critical calculations like wet bulb and dew point with the RHT100 Relative Humidity and Temperature Gauge. The small bendable probe allows the technician to position the sensor directly in the path of airflow by inserting the probe into small openings for precise measurements where needed. The RHT100 delivers superior accuracy, elite technology, and advanced app functionality with remote, real-time readings.

Features and Benefits

  • Wireless Bluetooth Range - A range of up to 1000 ft for ultimate connectivity no matter where you are.
  • Flexible Probe - Get precise measurements by placing the probe in the airflow path of hard-to-reach areas.
  • Measurements Hold Feature - Freeze measurements with a press of a button to then view with ease.
  • Backlit LCD Display - The illuminated display allows for optimized readability in poorly lit conditions.
  • App Compatibility - With the Appion Central™ App, the RHT100 is capable of remote viewing, live data-logging, reporting, and more.
  • Durable, Hard Case - Includes a carrying case with a foam insert to store and protect the instrument

Gauge Features with the Appion Central™ App

The Appion Central™ App enables remote, real-time viewing for all Appion Digital Gauges.

Pair the RHT100 with the Appion Central™ App to unlock advanced features such as live data logging, remote viewing of real-time readings, notifications from custom alarms when readings move beyond predetermined thresholds, and the ability to export job reports. More functionality, less bulk.

Useful Information

Additional Product Materials

Always wear gloves and eye protection and follow proper safety practices when handling refrigerant. See these Tech Bulletins for more information.

For California Consumers:


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