1) The light use PIR senror
2) The light is only 30mm thick
3) Auto switching on when detecting people coming

Specifications:

Super sensitivity within 3meter distanceWireless,easy to install,can be used in bedroom, washing room,and on refrigerator,washer,iron door,exhaust fan and anywhere you need lightLED quantity          8PCSLED Brightness      10000cdm (25°);1300 cdm(120°)-(optional)Stand-by current    <0.35mA  (Oprrating voltage:3V)Work current          <100mA   (Oprrating voltage:3V)Use condition         Adjustable (daylight or darkness)Light sensor           Bulit-inDelay time              If people leave,light will delay 5-7S turn offInfluence distance  <3mInfluence angle       >90°Battery                    110~220v AC 50-60hz  (included in package)Self-test time           20sencondsAccessories              3M two-sided adhesive tape; manual