The Remeha iSense thermostat is a compact thermostat with which you can easily set the desired room temperature. Program the desired temperature once and the thermostat controls the switching on and off of your central heating boiler. Your house is nice and warm when you get home from work and at night you'll never forget to lower the thermostat. Do you want the indoor temperature to be weather dependent? Simply expand the thermostat with an outdoor sensor.