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 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. Specification: 1.Protection zone: wire : 2 wireless:8 2. GSM band: EGSM900/DCS 1800/PCS 1900MHZ TX RX EGSM 880~915MHz 925~960MHz DCS 1710~1785MHz 1805~1880MHz PCS 1850~1910MHz 1930~1990MHz It can save six alarm telephone number and separately set SMS function or telephone alarm. transmitting power consumption:1W 3.LED indicators:8 4. low power protected time:<1 s