Humidity and Temperature Transmitter Series HMS80

±3%RH outdoor sensor for HVAC


A reliable basic outdoor humidity sensor for a pole or wall installation. Dew point, wet bulb and enthalpy outputs can be selected by dip switch instead of the default RH output. 5-year warranty is valid for instruments purchased in 2021 and beyond.

The Humidity and Temperature Sensor Transmitter Series HMS80 are optimized for outdoor measurements HVAC. They feature an integrated solar radiation shield, which is a must for accurate humidity and temperature measurements in outdoor conditions. Both 2-wire HMS82 and 3-wire HMS83 versions are available.

Watch video on the Outdoor Installation of Vaisala INTERCAP® Humidity and Temperature Transmitters HMS82 and HMS83.

View all our instruments for HVAC applications.


  • Reliable outdoor transmitters with integrated radiation shields
  • ±3 %RH accuracy
  • User-exchangeable INTERCAP® sensor for easy field replacement
  • Default output parameters are relative humidity and temperature. Dew point temperature, wet bulb temperature, and enthalpy outputs selectable using dip switches
  • Options for both current and voltage outputs
  • Ingress protection IP65

Key benefits

Easy installation

The HMS80 can be mounted directly to a wall or pole without any extra accessories.

Low maintenance

The INTERCAP® sensor can easily be replaced in the field with minimum downtime.

Integrated radiation shields

The radiation shields reduce the influence of solar radiation on temperature and humidity measurements.