A temperature and moisture sensor that is to be used with the PST 5000 de-icing control centre. The sensor is to be installed inside the heated area. The sensor is equipped with an NTC resistor that measures the ground temperature. The sensor is also equipped with two metal rings that measure moisture. This model is not equipped with a separate heating element. The purpose of the sensor is to monitor the temperature inside the heated area both when the heating is on and off. The sensor must be installed to a place where it is directly exposed to the effects of weather (e.g., snow, rain, and melt water). The sensor must be installed at a distance of at least 2.5 cm from the heating cables. The connection cable of the sensor can be extended with a 4 x 1.5mm² cable up to 50 metres.