Technical specification:

Operating voltage: 9V battery
Standby current: less than 25uA
Alarm current: less than 15mA
Operating temp. :-10 to +50 degrees
Installation mode: wall mounted
Installation height: about 2m
Detecting distance: 12m
Detecting angle: 110 degrees
Transmitting freq.: 315MHz or 433MHz
Transmitting distance: more than 200m (in the open area)
Dimension: 107*59*45mm