1.Support GSM frequency 850/900/1800/1900 MHz,Working frequency between detector and alarm host(315M/433M optional) 315/433 Mhz optional. 2.4 wired guarding zones for connecting wired sensors, 1 x relay outputs, Can control home appliances remotely through the relay output;50 Wireless guarding zones; 3.SMS 5 phones automatically while alarming 4.Call 5 phones automatically while alarming and drive wiretap, can clearly hear the voice on the scene. 5.Digital inputs are adopted opti cal-coupled isolators, which can prevent external high voltage from destroying internal. 6.arm/disarm and program the system by phone & SMS 7.record function: Maximum recording time:1 minute 8.tamper device: Arming while the control panel removing or shaking. 9.with standby rechargeable battery. The host automatically stores system status, while its power is off. Technical parameters: 1.Wireless distance :100-200m(without obstacles) 2.Alarm response time=8S(GSM in normality) 3.Working conditions Operating temperature: -45~+60? Humidity: =95% 4.standby current:5mA 5.standby power:< 0.3W 6.Standby battery working hours=48hours 7. Dimension: 188mm(Long)×120mm(Wide)×28mm(High) Gross weight: 1.5Kg Net weight: 0.5Kg Application: It widely applied in workstation/Shops/super market/Community management/government entity/bank/security company/Local police station and so on for cable telephone network to protection can't get to the place. Them can protect the safety of user and take care of property.