The R3H710RF0005 is a Thermostat Receiver/Relay for use with Honeywell wireless thermostats and controls. It is a single channel so ideal for use with a combi boiler or a multizone system. The receiver requires a 240v mains supply, however it provides volt free switching. This is a brand new receiver unit only and was unused after installing the included DT4R. Please contact me for further information
