For frost protection control of pipes. Nominal voltage 230V. Nominal current 16 A res. Max load 3600 W. Adjustment range +2 - +35 ºC. Sensor 4 m, extendable up to 25 m with 2 x 1,5 mm². Sensor 47 kohm / 25 ºC. Box AP9. IP55. The sensor is installed to the top surface of the pipe when the cable is used inside the pipe. When using the cable outside the pipe, the sensor must be installed opposite of the heating cable, to the presumably coldest spot.