Three band GSM alarm system CH-GSM-200 GSM frequency: DC900/1800/1900MHz 7 wired zones and 99 wireless zones, supports 7 wired detectors and 99 wireless alarm accessories. Live human voice instruction, easy for installation and operation, DIY design Support 6 groups preserved telephone numbers and alarm phone prior to others 3 groups SMS message telephone numbers, Auto-sends preserved SMS message to programmed phone number Ten seconds voice message pre-recorded and playback when alarm occurs Two way communication between telephone and alarm panel. Use alarm panel keypad to call, and use telephone to monitor sound around alarm host. One key control design for arm, disarm, home Programming real time, 24 hours bypass defense zones ASK coding between alarm host and accessories Backup AAA-NI-MH*6 battery for non-stop work. Features: Power supply: DC12V/1A Standby currency:
