Here are some common features and functions of a Bluetooth car alarm system:

1. Smartphone Integration: The system connects to your smartphone via Bluetooth, enabling you to control and monitor your car’s security features through a dedicated mobile app.
2. Alarm and Immobilization: The system can trigger an alarm if unauthorized access or a break-in is detected. It may also have the capability to immobilize the vehicle’s engine, preventing it from starting.
3. GPS Tracking: Some Bluetooth car alarm systems offer GPS tracking functionality. This allows you to track the location of your vehicle in real-time, providing an added layer of security and the ability to recover your car if it’s stolen.
4. Proximity Sensing: The system can detect the proximity of your smartphone to the car. It can automatically unlock the doors when you approach the vehicle and lock them when you move away.
5. Remote Control: You can remotely lock and unlock your car doors, start or stop the engine, and control various other functions using the mobile app on your smartphone.
6. Notifications and Alerts: The system can send you notifications or alerts on your smartphone when certain events occur, such as an alarm trigger, a door being opened, or the vehicle moving outside a predefined geofenced area.
7. Battery Monitoring: Some Bluetooth car alarm systems can monitor the battery voltage of your vehicle and send you alerts if it drops below a certain level. This can help you avoid situations where the battery dies unexpectedly.