Auto Switching On LED Sensor Light 1) The light use PIR senror 2) Auto switching on when detecting people coming 3) Comes on automatically to illuminate the keyhole as you approach , making safe entry into your home. No more fumbling by your door in the dark. Specifications: PIR Pyroelectric Infrared Radial Sensor Material ABS Size(cm) 8.1x4.6x3 Power(W) 0.24 Operating voltage(V) 3 Light Source LED(4pcs) LED Brightness 10000mcd(25º) 1300mcd(120º) --- (optional) Use condition Only darkness Coverage Angle 60° Sensor Distance 2-3m Delay Time 20-30 seconds ---(adjustable) Battery AA(1pc)