The Danfoss Randall 103 Mechanical Programmer Timer is a reliable and programmable thermostat designed for home heating and cooling systems. With a sleek white rectangular shape, this surface or wall-mounted timer offers easy control with its rotary knob and switch controls. Made of durable plastic and powered by a corded electric source, this timer from the trusted brand Danfoss is perfect for maintaining a comfortable temperature in your living space. Backed by a 1-month manufacturer warranty, this timer is a versatile and efficient addition to any home. tested fully working