Humidity and Temperature Transmitter Series HMDW110

±2%RH transmitters with a certificate for demanding HVAC

5 year warranty HVAC devices

Vaisala HUMICAP® Humidity and Temperature Transmitter Series HMDW110 is suitable for relative humidity, dew-point, enthalpy, wet-bulb temperature and temperature measurement in demanding HVAC applications. The series includes transmitters for duct mounting, IP65-classified wall transmitters, and outdoor transmitters with integrated radiation shields.


The cost-efficient HMDW110 series transmitters are equipped with trusted HUMICAP® 180R sensors. The sensor’s superior long-term stability minimizes maintenance needs throughout the transmitter’s lifetime. The most popular control parameters in free cooling – dew point temperature, wet-bulb temperature, and enthalpy – are available as output parameters. The transmitters come with a calibration certificate. 5-year warranty is valid for instruments purchased in 2021 and beyond.

The HMD110 and HMW110 transmitters can be ordered with a catalytic HUMICAP® sensor 180V. The catalytic sensor improves stability especially in hydrogen peroxide sterilized environments where repeated condensation is expected. Transmitters can be installed into difficult-to-reach locations, while measurement data can be read from a more convenient spot.

The following models are available:

  • HMW110 Wall-mount, RH+T 2-wire, current output, IP65, Configurable model
  • HMW112 Wall-mount, RH+T 2-wire, current output, IP65
  • HMD110 Duct-mount, RH+T 2-wire, current output, IP65, Configurable model, 
  • HMD112 Duct-mount, RH+T 2-wire, current output, IP65
  • HMS110 Outdoor, RH+T 2-wire, current output, Radiation shield, IP65, Configurable model
  • HMS112 Outdoor, RH+T

Please note that the configurable models are delivered with customer-specific output settings, including calculated humidity parameters and special scaling of outputs.

Key benefits

Unrivaled Outdoor Humidity Measurements

An integrated radiation shield enables unrivaled measurement performance. It reduces the impact of the sunshine on temperature and humidity measurements, and ensures measurement accuracy in outdoor conditions.

Well-Suited for Cleanroom Monitoring

The HMD110 transmitter can be ordered with a catalytic HUMICAP® sensor HUMICAP® 180V.

On-site calibration

On-site calibration with a Vaisala HM70 Hand-Held Meter or PC connection.

Product Resources