Auto LED Light auto switching on when detects intrusion. Super sensitivity within 3 meter distance. Wireless, easy to Install, can be used in bedroom, washing room, and on refrigerator, washer, iron door, exhaust fan and anyplace which needs light.lighting.Long life with 80,000.00 hours using 4 AAA alkaline battery(not included). Adjustable delay time, operating brightness. Suitable for indoor or outdoor.