... original car alarmEasier installation without cutting any wire For GT,GL8,BUICK OBD car alarm This is ... , easier destroy the car's circuit.Alarm detecting for 4 doors, 4 door actuators,carbonnet and trunk ... detecting for 4 doors only, couldn't work with car bonnet and trunk controlling.Speed over 20km/h, ... suddently, the car door will be unlocked automatically(For example:Car speed is reduced from 50kms/h ...