The Honeywell T4 Pro Programmable Thermostat - TH4110U2005 is a white, wall-mounted unit with a 4-inch digital display that offers 7-day programmability. It features a 4-wire wire configuration and operates on 24V of corded electric power with the option to use batteries. This thermostat, with heat and cool stages, is compatible with various brands and models, including Honeywell, and has a 5-year manufacturer warranty. It has a touch screen design with push-button control and is designed for anti-island protection and chemical resistance. Perfect for maintaining the optimal temperature in your home.