The digital adjustable thermostat allows temperature accurate heating of heating mats, heating foils, heating plates and other heating products that need to work very accurately in a small temperature window and avoid temperature fluctuations. With the accuracy of 1°C, the temperature control range can be set from -50°C to +110°C. To avoid operating errors by third parties, an upper and lower heat limit can be set. The control thermostat allows switching voltages of 12V, 24V, 48V and 110/220V. The operating voltage supply is model dependent and available for 12VDC, 24VDC and 220VAC applications.