... a new version of two-way car alarm system. It combines the GSM mobile communication, MGPS locating technology andMICROCHIP rolling ... TelephoneLock/Unlock the Door by TelephoneInquire by TelephoneBasic Components1 mainframe, 2 remote controls, 1 dialer, 1 vibrator, 1 siren, ... : 12VFoot Brake: 12V 4. GSM Module Frequency Range: GSM 900MHZ/1800MHZ Voltage of Serial Interface: 2.8V Stand-by Current: 11 ...