VisionPRO® 8000 Premier White® universal programmable thermostat with 3 heat/2 cool stages has responsive programming for optimal comfort and energy savings. Features touch-screen interaction, real-time clock, and backlit display. Includes a set of universal Indoor Air Quality (IAQ) contacts to control humidification, dehumidification or ventilation. Also has advanced dual fuel control. Select programmable or non-programmable. UN-3091 lithium metal batteries packed in/with equipment. Use with heat/cool system or heat pump with auxiliary heat. Dimensions: 4-9/16 inch high x 6 inch wide x 1-1/4 in. deep (116mm high x 152mm wide x 32mm deep). L terminal is input or output. Programmable or non-programmable. Includes dehumidification control. Mounting: horizontal. Stages: up to 3 heat/2 cool (heat pump); up to 2 heat/2 cool (conventional). Operating humidity range (% Relative Humidity [RH]): 5 to 90% RH, non-condensing. Switch positions (system): HEAT-OFF-COOL-AUTO-EM. HEAT. Switch positions(fan): AUTO-ON-CIRC. Seven- day, multiple day programming or non-programmable. Battery or hardwired. Display size: 10 square inch. Select auto/manual changeover. Setting temperature range: heat, 40F to 90F; cool, 50F to 99F. Setting temperature range: heat, 4.5C to 32C; cool, 10C to 37C.