It is compatible with 24 V to 230 V on or off appliances such as gas boilers, combi-boilers and zone valves and can be used as a temperature sensing device in an S or Y Plan system. Wireless communication between thermostat and receiver box with 30 m range.
Great wireless thermostat, had one exactly the same in my previous home always reliable and accurate easy to program. Purchased to fit in new home connected up to Worcester Greenstar with no issues.