The Resideo TH6110D1021 Programmable Thermostat is a versatile and user-friendly device for controlling household heating and cooling systems. This thermostat has a big, backlit LCD screen with a 5.09 sq. in. display, providing great sight and ease of usage. Its 5-1-1 programmable feature enables versatile scheduling, with distinct programming for weekdays, Saturdays, and Sundays, as ... https://www.partshnc.com/th6110d1021-resideo-5-1-1-prog1h1clarge-backlit