... Components: 1mainframe, 1 GSM antenna, 2 remote controls, GPS antenna, 1 dialer, 1 shock sensor, 1 siren, 1 speaker, 1 relay, 1 ... -316MHzAnti-hijackFull-time guard your car with built-in GSM module system.Arm/disarm by cell phone, telephone and remote controlRemote ... -hopping technologyAuto dial out(with voice message &SMS)when the GPS GSM car system is triggered.engine start/stop by telephone ...