... Components: 1mainframe, 1 GSM antenna, 2 remote controls, GPS antenna, 1 dialer, 1 shock sensor, 1 siren ... dial out(with voice message &SMS)when the GPS GSM car system is triggered.engine start/stop ... shock, power off Etc)Emergency help switch. This GPS GSM car alarm system will dial the emergency ... direction)while alarming in real time.GPS car tracking. When the GPS GSM car system alarmed, the registered ...