Features: 1. Anti-Theft: When the vehicle is in a non-starting state, if the感应 card is not present inside the vehicle, the engine cannot be started, helping prevent unauthorized启动. 2. Anti-Hijacking: After the vehicle has been started, if the感应 card is removed from the vehicle, the engine will automatically shut off after 1 minute to help prevent hijacking. 3. High Sensitivity: Induction detection range of 2–8 meters, with adjustable sensing distance, audible alarm, and 0.1-second alarm response time. 4. Low Voltage Alarm Prompt: When the battery voltage in the proximity card is low, the buzzer will sound an alarm after the vehicle is started. 5. Strong Compatibility: Works with any 12V car and can be installed in vehicles that already have anti-theft alarm systems. Specification: Item Type: Car Immobilizer Material: ABS Alarm Mode: Sound alarm Power Supply Voltage: 12V/3V Rated Voltage: 12V Alarm Response Time: 0.1S Battery Type: 2 x button battery (included) Battery Model: CR2032 Battery Capacity: 210mAh Applicable Models: 12V car Additional Features: 1. Suitable for any 12V car installation 2. Strong compatibility (can be installed in vehicles already equipped with anti-theft alarms) 3. Induction detection range of 2–8 meters 4. Adjustable sensing distance 5. Dual anti-theft and anti-hijacking functions 6. Anti-theft function: If the system does not detect the proximity card inside the vehicle, the engine cannot be started even if the door is forced open. 7. Anti-hijacking function: When the vehicle is running and the proximity card is taken out of the vehicle, the engine will automatically shut off after 1 minute. 8. Emergency release mode (user-friendly function selection for car wash or maintenance mode) 9. Low voltage alarm prompt (buzzer sounds when the proximity card battery is low, after starting the vehicle) 10. Compact size, simple wiring, easy installation, and high concealment 11. Operates on 2.4GHz frequency for reduced interference and power efficiency Package List: 1 x Anti-Theft Device 2 x Remote Control 2 x Battery 2 x Key Ring 3 x Cable Tie 1 x Manual