The Honeywell ST9100C 7 Day Single Channel Time Switch is a programmable thermostat designed for central heating radiators. With a sleek white rectangular shape and a 7-day programming capability, this corded electric device allows for easy control of your heating system. Featuring a range of control styles including dial, switch, push button, and digital, this timer-equipped thermostat offers auto system switching for added convenience. Suitable for mounting on the wall, this Honeywell time switch is a reliable and efficient choice for maintaining a comfortable home environment.