Installed on the front and rear bumpers, it accurately detects the distance of obstacles through ultrasonic waves, triggers real-time alarms, and effectively prevents parking scratches. Made according to original factory standards, it has waterproof, earthquake resistant, anti-interference characteristics, stable signal, and low false alarm rate. Plug and play, perfectly matching the original vehicle circuit and interface, no need for modification. Mainly used to repair radar false alarms, no response, long beeps and other faults, ensuring parking safety.