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)