I put the Universal Thermostat UT 200 a for switching an electrical heater in the mobile home. The thermostat is very easy to adapt to an upper and lower switching temperature. This value is permanently stored even without battery or power supply. The attached, provided with a long cable sensor can easily be mounted at a suitable location. The large display is illuminated as soon as you press a button. After a certain time, the lighting is switched off again automatically. The permanently displayed actual temperature can be read but still good. The thermostat does what he should, on or off a device according to the set temperature, reliable and accurate to 0.1 degrees. The only downside is the high price.