Note:the item ship out without the battery and it must work with alarm system,it can not work independent.
Description
Alarm current: less than 15mA
Operating temp.: -10 to 50 degrees
Installation mode: wall mounted
Installation height: about 2m
Detecting distance: 3-12m
Detecting angle:90-110 degrees
Transmitting Freq.:433MHz
Sending distance: more than 30m( in the open area)