1): One Way Basic Type Double Sides PCB Car Alarm 2): Basic Model Car Alarm System 3): Two Sides PCB Car Alarm Basic Type Car AlarmWe have been producing car alarm system since 1998 here in China. Here below are the specifications for our one type of basic car alarm system with double side PCB.1.Arm/Disarm 2.Warning identification, Anti-hijacking 3.Central door locking system automation, Door ...