... electricity control, etc. compatible with CCTV surveillance and centre monitoring system.1. Wireless type, easy to install, without phone line.2. Remote ... High siren volume so to scare away intruders6. 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 programmed9. Panic help10. ...