A non-passive alarm is installed in your car and has to be activated every time you leave the car. You may qualify for an auto insurance discount if your car is equipped with such an alarm.
Passive car alarms are activated automatically and emit warning sounds when someone tries to get into your car. Once the passive alarm has been triggered, the system disables the automobile's starter, ignition system, and/or fuel circuit. You may receive an auto insurance discount if your car has such an alarm