Our site uses cookies

I agree Our site saves small pieces of text information, called “cookies” on your device. Find out more in our cookie policy. You can disable the usage of cookies by changing the settings of your browser. By continuing to browse the site you are agreeing to our use of cookies.

RH-622 Duct Mount RH & T Sensor


The RH-600 range of humidity and temperature sensors offer the latest technology high precision and accuracy RH & T element, and installed in our new revised robust 600 series housing. The housing has an added benefit of being easy to install with the new hinged lid, which can also be screwed closed to make the unit tamperproof. An optional multi-line backlit LCD display is available, along with a direct PTC/NTC sensing element (when this option is required, the type of element must be specified at the time of ordering). Output signals of 0-10Vdc, 0-5Vdc or 4-20mA (loop or externally powered) for all measured values and RH are available as standard. A custom output range for temperature can be requested, between –20 and +50°C. The -UN has a single output which automatically determines whether to run in current or voltage mode, no more jumpers or switches to worry about.


  • Self-detecting output (-UN types)
  • High stability and reliability
  • Snap-fit cover 
  • Fully configurable LCD display option


Download full datasheets for these products below.

RH-622-UN RH-622


Code Name Price Quantity
RH-622 RH and T Transmitter 3%
1+ (USD) $224.13
10+ (USD) $212.94
RH-622-AH RH and T Transmitter 2%
1+ (USD) $261.50
10+ (USD) $248.40
RH-622-AH-T RH and T Transmitter 2% Direct Thermistor
1+ (USD) $292.95
RH-622-AH-TR RH and T Transmitter 2% Custom Temp Range
1+ (USD) $286.38
RH-622-EN Duct Enthaply and Dewpoint Transmitter
1+ (USD) $298.84
RH-622-LCD RH and T Transmitter 3% c/w LCD
1+ (USD) $331.08
RH-622-T RH and T Transmitter 3% Direct Thermistor
1+ (USD) $255.60
RH-622-TR RH and T Transmitter 3%
1+ (USD) $249.03
RH-622-UN Duct RH Sensor Single Analogue Out
1+ (USD) $178.61
RH-622-UN-T Duct RH Sensor Single Analogue Out and D.T Output
1+ (USD) $210.07
Code Name Price Quantity
DPA Duct Probe Adjustment Flange
1+ (USD) $43.69