The Thermo1 is the ideal temperature controller for all heaters, heating cables, etc. The Thermo 1 simply needs to be plugged in to an outlet and you can use the arrow keys to adjust the temperature with no problems at all so any electrical appliance is on when the temperature falls below the temperature you set it at, once the termperature reaches the set temperature the electric appliance is switched off automatically. This device can be easily operated. Setting range is -50C to 99C and the sensor length is 2.5 metres. Range -50C to 99C. 2.5 m probe length. IP X 4 suitable for damp locations. Switching accuracy +/- 2C. Very easy to use.