Honeywell Home T3R wireless programmable thermostat provides intuitive time and temperature control, suitable for domestic heating systems, social housing, new construction, and mass installation situations. It is compatible with a wide range of boilers and systems including 24 V to 230 V on or off, such as gas and oil boilers, combi-boilers, and heat pumps. The T3R offers Open Therm control but is not suitable to control electric heating. Enjoy a modern, fully-featured, and programmable thermostat at an affordable price, designed with convenience and simplicity in mind. Features include 5/2 and 7-day programming with 4 time periods a day, a large backlit display, 12-hour or 24-hour clock settings, battery power (included), a date/time and clock start-up screen, wireless communication, and an included table stand. It is simple to set up and use, compatible with gas and oil central heating boilers including combi boilers, and offers significant energy efficiency from a premium brand.