Dwyer Model RP2 Thermo-Hygrometer Probe


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Dwyer Model RP2 Thermo-Hygrometer Probe

Wireless, Measures Humidity, Temperature, Dew Point, & Wet Bulb Temperatures


The Model RP2 Wireless Thermo-Hygrometer Probe measures relative humidity, temperature, dew point, and wet bulb temperatures when combined with the Model UHH Universal Handheld. In order to protect the sensor in higher air flow ducts, each probe comes with a membrane filter. Factory calibrated replacement humidity sensors can plug directly into the probe without requiring additional calibration.

Wireless probes can take measurements up to 50 feet away from the UHH. A bicolor LED flashes on the handle of the probe to indicate communication status with the handheld. The battery is rechargeable via the mini-USB connector on the bottom of the probe.

Download the Mobile Meter® Software Test Instrument App which converts Android® based phones and tablets into a multi-function test instrument.


Product Applications

  • Building Commissioning
  • Building HVAC Test and Balance



Service: Clean air.
Temperature Limits: Process: -4 to 140°F (-20 to 60°C); Ambient: 5 to 125°F (-15 to 51°C); Battery Charging: 32 to 113°F (0 to 45°C).
Range: RH: 0 to 100% (non-condensing); Temperature: -22 to 140°F (-30 to 60°C).
Accuracy: RH: ±2% @ 25°C (10 to 90% RH); ±4% (0 to 10, 90 to 100% RH); Temperature: ±0.54°F @ 77°F (±0.3°C @ 25°C).
Response Time: 1.5 s.
Probe Length: 8" (203 mm) insertion.
Power Requirements: 3.7 V YT562447 Lithium ion battery, installed functional, user replaceable. (Note: Intended to be operated with power cables less than 3 m in length). (Wireless Only).
Maximum Wireless Distance: 50' (15 m). (Wireless Only).
Handle Enclosure: Thermoplastic elastomer over polycarbonate.
Supplied With: Wrist strap.
Weight: 11.2 oz (317 g).
Agency Approvals: CE (not while charging), RoHS, FCC compliant.



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  • Dwyer Model RP2 Thermo-Hygrometer Probe