... For LACROSS,REGAL,BUICK OBD car alarm This is a new upgrade car alarm system with the original fittings, ... CANBUS UPGRADE ALARMVSAFTERMARKET CAR ALARMCompatible with the original car remotesUse the aftermarket car alarm remotecontrollerWith the original car's CAN data, ... car's CANBUS communication data, control the alarm features originally.2Car door,trunk,bonnet trigger alarming with the signal light ...