... unique ,privacy ,passive ,prevent sectional yards ,prevent removal Car parking Security system 1.FeaturesAutomaticAfter 15 second turn off the ignition ... operation 2.Instructionremove anti-theftWill the location near the sensors,smart card system automatically send out "DI DI ' ... safety system reopened.maintenance modelwill the location near the sensors,smart card system automatically send out "DI DI ...