GSM network protection, short message sending function. DIY, Customize, easy-to-use and install! ATS-802 is the d advanced GSM prepaid module made by Shenzhen ABS Technology CO.,LTD. It features eleven different wireless protection zones, two wired protection zones, partial disarmed, remote telephone control, remote electricity control, etc. compatible with CCTV surveillance and centre monitoring system. 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 up alarm receiving central through GSM network.