Main function: 1. Can be equipped with existing electronic systems and other safety devices. 2. When you open the car, the front doors and rearview mirrors will turn on automatically; 3. When ACC and doors are closed, the rearview mirror will automatically fold. Automatic folding: 1. When ACC is closed, the rearview mirror is automatically retracted after locking the central locking for 5 seconds; 2. Once the lock is unlocked, the mirror opens automatically. 3. When ACC is turned on, the mirror folding system is disabled by default. 4. Only the original rearview mirror switch can be controlled Smart Mode: If the central locking unlock green line is not connected, the system will enter smart mode and the rearview mirrors on both sides will automatically expand when ACC is turned on. Automatic protection: If the door is opened and closed frequently, the system stops working. Specifications: Weight: 119g Size: 60*50*30mm/2.36*1.96*1.18'' Note: Only suitable for car with electronic side mirror folding switch. Confirm that the mirror switch is open to ensure the normal operation of the system. Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thank you for your understanding.