... brightness lower than 20 LUX , LEDS keep on.1 Adjustable brightness ( from bright to dark) 2 Auto ... can be used in bedroom, washing room, and on refrigerator, washer, iron door, exhaust fan and anywhere ... seconds time when human leaving or in static state D.Switch put to position of "CONT"it ... light resource. 7.it could be randomly sticked on refrigerate,washmachine,steel-gate,wall and ceiling wall ...