The Honeywell Home Sundial RF² Central Heating Control Pack Y9420H1008 is a programmable thermostat with a 7-day schedule, perfect for managing your central heating radiators efficiently. This sleek white wall-mounted device operates on batteries (AA) and features a wireless connection for easy installation. With its push-button and digital control style, along with room and remote sensor technology, this thermostat provides accurate temperature control while offering convenience and energy savings. The compact rectangular shape and compatibility with wireless models make it a practical choice for any home.