Programmable outlet thermostat allows control any 120 volt device up to 15 amps. Use with a fan or air conditioner for cooling purposes. Also may be used with a space heater for heating purposes. Separate programs for heating and cooling. Setting Range 45?F to 90?F (7?C to 32?C) with ?F/?C selectable. Temporary temperature override and a manual hold. Adjustable temperature differential/cycle rate. Mode slide switch and a positive on/off switch. 120VAC outlet powered. 12 hour clock only. 2 G13A size 1.5V alkaline batteries included (for clock only). On-screen low battery indicator. Battery free memory storage. 5 minute short cycle protection. Time and temperature alternate in display.