ASIC Adopted Auto temperature compensation send alarm signal by RF No wiring,Install coveniently Low battery indication SMT design adopted Operation Voltage: 9V 6F22 battery (Power by battery not included) Static current: less 25uA Alarm current: less 15mA Detecting distance: 12M Detecting angle: 110 degree Code form: 1527 type Wireless frequence: 433MHZ Wireless distance: 100M(Open area) Low battery indicator: Yellow LED Alarm indicator:Red LED Range of coverage: 11 distance ,8 middle,5 Vicinities Sensor: Dual elements infrared sensor Operation temperature: -10 Celsius --- 50 Celsius Enviroment humidity: less 95%(no congelation) Anti RF interference: 10MHZ-1GMHZ 20v/m Installation mode: wall mounted or hanged in corner Installation height: 1.7-2.5m(2.2m is proposed) Outline size: 59 x 45 x107mm (L x W x H) Colour:White Material:ABS Package Contents: 1 x Wireless PIR Motion sensor (no 9V battery) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.