We are sole manufacturer of automobile brake and alarm system.It is our patent product .It can brake and give voice alarm in the emergency and before accident . The description of automobile brake and alarm system Car Security Smart Collision Alarm and Brake System ---- Sole Supplier Keep Car Collision Dangers Away --- Drowsy Distracted Unexperienced Long-time Drive Fatigue... Product Function: 1.Automatically Alarm when obstacles in front pose a threat.2.Automatically Decelerate or even Brake the car if the driver doesn't take measures in time after the alarm. Product Features: 1.Small in volume, Convenient to operate and Easy to install.2.Fit all various vehicles 3.Can be directly installed without any change to the vehicle's original structure and performance.4.Anti-interference and Reliable 5.Not affect the car's start, acceleration and overtaking. 6.Work effectively both in the daytime and at night. 7.Drivers can customize the system's alarm and brake function.