Emerson 80 Series thermostats offer a footprint that fits the install, features that fit the homeowner and support that fits your business. With a large, backlit display, easy to use design, flexible programming and dependable performance, 80 Series thermostats are the perfect fit for every application. Large display, bright backlight, high contrast screen. Easy to install with built-in level, simple set-up menu and separate subbase. Non-Programmable. Dual fuel control, no outdoor sensor required, standard on all staging models. Auto changeover on all universal models. Keypad lockout and adjustable heat/cool temperature limits. 5 year limited warranty for professionals.