Basic Function: Adopt the GSM network, no distance limit when alarming. Can surpport the GSM mobile phone, with sending 3 short English messages function. Can store 3 alarm phone numbers, which can send to the owners, policeman and the monitoring center. Long distance to arm/disarm/panic alarm/monitor, monitor function: the people can hear clearly the voice on the spot. The owners can control the small household through the mobile phone or telephone when they are out. All kinds of wireless detectors can be compatible with the system, such as door sensor, P.I.R detector, remote controller, gas detector, smoke fire detector, panic button, infrared baluster. No need the telephone line, very suitable for the garage, store, house, warehouse, shop and other places without network. others: 1. Wireless type, easy to install, without phone line. 2. Remote control, convenient. 3. Password protected 4. SMS to enable arm/disarm, partial arm/disarm, siren 5. High siren volume so as to scare away intruders 6. SMS and auto dial up three phone numbers, locale monitoring start on. 7. SMS to recheck the GSM panel status, alarm report, zone name, arm/disarm status. 8. Audible/mute siren programmed 9. Panic help 10. AC power shutoff self-detected to avoid malice destroyed, automatically switch to battery back-up 11. Enable to setup alarm receiving central through GSM network.