The Heatmiser Slimline-RF wireless thermostat works with the Heatmiser RF Switch & UH8-RF Wireless Wiring Centre. The wireless thermostat is designed to be wall mounted in the area being controlled, up to 100 meters open space from the receiver. Please note there is no receiver included with this wireless Heatmiser thermostat. Comes with 2 x AA batteries Can be wall mounted anywhere that is not near a heat source. The Heatmiser Slimline RF can be used with underfloor heating or radiator system