PIR:Pyroelectric Infrared Radial Sensor Material: ABS&PMMA Size(cm): 8.8x8.8x3 Power(W): 0.48 Light Source: LED(8pcs) LED Brightness:10000mcd(25º) ;1300mcd(120º) --- (optional) LED Life:>80000H Operating voltage :3V Use conditions Adjustable (daylight or darkness) Sensor Use doule-windows PIR sensor Delay time 5-7S, Constant.(+20%) Influence distance <3m Influence angle >90 º Battery: AA(2pcs)