Digital, 1 Heat 1 Cool, Non-Programmable Thermostat, Large Digital Display, Electronic Accuracy, Adjustable Swing For Better Comfort Control, No Leveling Required, On Screen Low Battery Indicator, For Use On Most 24V Heating & A/C Systems, 1 Stage Heat, 1 Stage Cool, Gas, Oil Electric Or Single Stage Heat Pump Systems, 2 Wire Heat Only Hydronic Systems, MilliV Systems, Includes Light.