Premier White® universal touchscreen programmable thermostat with 3 heat/2 cool stages. VisionPRO® 8000 has responsive programming for optimal comfort and energy savings. Features touch-screen interaction, real-time clock, and backlit display. UN-3091 lithium metal batteries packed in/with equipment. For heat/cool or heat pump with auxiliary heat. Dimensions: 4-9/16 inch high x 6 inch wide x 1-1/4 inch deep (116mm high x 152mm wide x 32mm deep). Programmable or Non-Programmable; L terminal is input or output. Mounting: horizontal. Stages: up to 3 heat/2 cool (heat pump); up to 2 heat/2 cool (conventional). Seven-day, multiple day programming or non-programmable. Battery or hardwired. Display size: 10 square inch. Auto/manual selectable changeover.