The DWHOS Dual Technology Humidity/PIR Motion Sensor combines humidity and PIR technologies into one unit to reduce bathroom condensation while saving energy at the same time. DWHOS is ready to be turned on when the red fan LED indicates the indoor humidity level reaches its set point. If the humidity value is under the set point and/or no movement is detected at the time delay, the fan will automatically turn off. The sensor can be configured to turn the lighting on manually or automatically, and will stay on as long as motion is detected in the room. Once no movement is detected during a specified set time, the light will turn off automatically. The sensor replaces a single pole switch and requires a neutral wire to control of ventilation fan or fan/light combination.^^SPECIFICATIONS Interchangeable face cover (White/Ivory/Light Almond) ; Wallplate Not Included ; Voltage: 120VAC, 60Hz ; Maximum Fan Load: 3 Amps ; Motor: 1/4 HP^Minimum Light Load 10W or two light bulbs ; Fluorescent : 400 VA ; LED: 150 W ; Incandescent: 500 W^Time Delay ; Light & Fan: 15s, 5 mins, 15mins, 30 mins^; Humidity Range: 45% - 80% RH ; Ambient Light Level: 0 - 20FC ; PIR Coverage: 600 sq.ft.^^COVERAGE ; Best: 150 sq. ft. ; Regular: 400 sq. ft. ; Maximum: 600 sq. ft.