An ice and snow sensor that is to be used with the PST 5000 de-icing control centre. The sensor is to be installed outside the heated area. The sensor is equipped with an NTC resistor that measures the ground temperature. The heating element and two metal rings integrated in the sensor measure moisture. The sensor must be installed outside the target area at a place where it is directly exposed to the effects of weather (e.g., snow, rain, and melt water). The connection cable of the sensor can be extended with a 5 x 1.5mm² cable up to 50 metres.