Heat Pump Thermostat, 2-Stage Heating, 1-Stage Cooling, Controls a Heat Pump System Where Automatic Changeover (Heat to Cool) Is Not Required, Features:Has Emergency Heat and Auxiliary Indicator Lights, The Emergency Heat Indicator Light Can Be Wired to a Malfunction Switch to Provide a Malfunction Indicator, Temperature Range:40-90 Degrees F, System Switch:Cool-Off-Heat and Emergency Heat, Fan Switch:Auto-On, Color:White, Logo:York, Weight:6oz, Dims:3-1/2"H X 5-1/2"W X 1-1/4"D, Origin:Unknown