Function:
1. Tamper switch: it will send alarm signal if cover is disassembled
2. Preset coding with the control panel: Switch the protection zone to "ON"  press the tamper switch and send wireless signal, the control panel sounds, it means that coding is completed matched.(refer to the  coding program of control panel operation instruction and relative detector).
3. Low battery alarm: when battery is low voltage, the human being body moving, LED flashes five times. In static environment, it is not activated.
4. Coding address: preset by manufacture or by user.
5.Protected time choosing: 3 seconds or 30 seconds, it is preset by playing pins.
6. Compatible with many control panel.

Specification:
Power supply: 9VDC Li-ion & manganese battery   500mAh
Working current: static < 30uA; alarm < 16 mA
Wireless parameter: frequency 315MHz or 433MHz, Transmitting distance >150 m (wide area without interfere) 
Detecting range: curtain type:6~10 celsius degree
Working condition: working temperature: -10 celsius degree~55 celsius degree . Product size: 89.5*53*39mm