Features: 1.Anti-theft, anti-robbing dual function selection 2.Small size, simple installation and strong concealment 3.Strong compatibility, can be installed in vehicles that have been equipped with burglar alarms. 4.The sensing distance can be adjusted freely. Suitable for any 12V car. 5.When the vehicle does not detect the induction, the car cannot be started after opening the door. 6.When the vehicle is running and the vehicle does not detect the induction, the vehicle will automatically turn off and cannot be started again. 7.Emergency release mode. Can choose car wash or maintenance mode. 8.When the internal battery voltage of the proximity card is too low, the buzzer will prompt after starting the vehicle. 9.With 2.4GHz frequency, less interference and power saving. 10.Proximity card uses large capacity CR2032 battery, which is built-in it. Specification: Condition: 100% Brand New_x000D_ Item Type: Immobilizer_x000D_ Color: Shown as Picture_x000D_ Induction Detection Range: Approx. 2-8 Meters/6.56-26.24ft PackageList: 1 x Anti-theft Device2 x Sensor2 x Keychain3 x Drawstring1 x Instruction Manual