Main feature:
◆ Wireless transmitting digital signal 
◆ Low power indication
◆ Automatic temperature compensation
◆ SMT adopted, anti-RFI & anti-EMI
◆ Low power consumption, long battery life
◆ Adjustable detecting distance

Technology parameter:
Operating voltage: 2*1.5V (2*AA battery)
Standby current: less than 12uA
Alarm current: less than 15mA
Operating temp.: -10 to +50 degrees
Installation mode: wall mounted
Installation height: about 2m
Detecting distance: 9-18m
Detecting angle:110 degrees
Transmitting Freq.: 315MHz or 433MHz
Sending distance: more than 200m( in the open area)