Humidity sensor


Humidity- and temperature sensor, 2 x 0-10V DC outputs, room installation. For measuring the relative humidity of the air.

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Description CRH-RW-24V

CRH is used for controlling the humidity and temperature of indoor environments.

CRH has a factory calibrated CMOS humidity and temperature sensor element with I2C communication and low power consumption. It has high accuracy and excellent long-term
stability. CRH has extremely low power consumption providing very low self-heating, a prerequisite for high measurement accuracy of relative humidity.


CRH is wall-mounted indoors and is large enough to cover an electrical box.
Install CRH away from direct sunlight and draft from ventilation, doors and windows. When mounted on an electrical box or conduit it should be sealed to avoid draft that could affect its accuracy.
Fit the CRH with the grids top and bottom to permit the flow of air. Place the sensor a minimum of 10mm from a doorframe or a wall to allow easy access to the cover.

CRH has a cable inlet at the rear for connecting to an electrical box or conduit.
With surface-mounted connection cable, there are spacers on the back of the enclosure that create a gap of approx. 1mm between the wall and the box through which to thread surface
connection wires. Wires that are thicker than 1mm can be threaded through the grid. Part of the grid can be removed if a larger hole is required.


  • Humidity sensor 0-100% RH
  • Temperature sensor 0-50°C
  • Extremely low power consumption
  • 24V AC/DC supply voltage
  • 2 x 0-10V DC outputs