The LED light is easy to locate for bathrooms, closets, storage rooms, garages, laundry rooms Automatically turnoff all types of light including LEDs, CFLs, and heaters at preset times Timing control within the set for time, knob designs, knob to the specified for time, mechanical gear rotation mechanics designs Replaces standard for wall light switchs, fan switchs or spring loaded timer for, convenience and lighting and fan control Various preset option: 1-15min, 1-30min, 1-60min, 1-120min; just turn the button to set the countdown for time preference