M152. When the sensor plate comes into contact with rain or muddy snow/hail, it activates a relay. This allows sun awnings or roof windows to be retracted, or simply to report the rain. The automatically heated sensor surface prevents the sensor surface from icing or frosting. 2 built-in LEDs show the function. Waterproof moulded electronics.
Please note: The electronics of the rain sensor reacts to the electrical conductivity of the water. Now we have found that there are areas where absolutely undiluted rainwater falls (distilled water). The sensor does not react to it. There must be minimal dirt in the water (dust contents, smoke, etc.) so that the water is electrically conductive and triggers the sensor. In 99% of areas in Germany, the rainwater is conductive. If the sensor does not trigger, please install it so that the rainwater runs over a small canopy or something else before the water touches the sensor. If the water falls directly from the cloud in the purest form onto the sensor and does not trigger it, then it is sufficient if it runs over a small board or from a canopy. Then the water has absorbed so much dirt that it is electrically conductive and triggers the sensor. Of course, install the sensor at an angle so that the water continues to runs down.

Operating voltage: 12 V / DC.
Power consumption without heating: approx. 8 mA.
Power consumption with heating: approx. 160 mA.
Relay contact: 1 x on, max. 25 V, 2.5 A load capacity.
Sensor heating: automatic when rain contact occurs.
LED 1: Indicates that the rain sensor is in operation.
LED 2: Indicates that the rain is reported and the relay has switched on.
Relay duty time: as long as the sensor is wet.
The module is waterproof moulded.
Active sensor surface, gold-plated: approx. 29 x 30 mm.
Dimensions: approx. 65 x 45 x 36 mm.