Support GSM 900/1800 MHz
Delicate, small, and powerful
Auto-dial 5 groups of phone number
Programmed to dial 3 times of all numbers
There are arm/disarm buttons
Remote control to arm/disarm.

Technical Specifications:

    Power: DC 12V / 1.2A
    Status current: <30mA
    GSM Bands: 850/900/1800/1900 MHz
    Wireless receiving frequency: 433MHz
    Receiving Code: ASK
    Wireless distance: no obstacle 80m
    Working Temperature: -10~+45
    Working Temperature: <90%
    Backup battery: 7.4V / 500mAh