Lux WIN100-A05 Heating & Cooling Programmable Outlet Thermostat Weekdays and weekends can be programmed differently Armchair programmable,For use with window air conditioners and electric space heaters 120-Volt Digital temperature control with easy to use touch keys,Display shows the preset and current temperature for easy reference Turn space heaters/window AC into programmable and more efficient,Programmable outlet thermostat flexible to comfort & schedules;Total_power outlets:1 easy plug-in thermostat for weekday and weekend comfort & savings For use only with air conditioners and space heaters that automatically restart cooling or heating operation after power re-connection Setting range 45-degrees F to 90-degrees F.NOTE:This is a basic self-serve model that plugs into a standard 15A@115V wall receptacle, and can control a window air conditioner, fan, or portable space heater, based upon measured room temperature and a scheduled program routine. NOTE: there is no installation required for this item.