Detail Car Front Rear Reversing Radar System 8pcs Parking Sensors Distance Detection Car Parking Radar Monitor Detector For Android Car Radio Navigation NOTICE: 1. This Reversing Radar is only suitable for Android Navigation! 2.The back of the navigation requires this 8P jack Working principle of reverse radar Most reverse radars use the principle of ultrasonic ranging. When the driver is reversing (when the gear is pushed to R gear, the system is activated, and the probe installed at the rear of the car emits ultrasonic waves towards the rear of the car, generates echo signals when encountering obstacles, and the controller controls and processes the echo signals to determine the direction and distance of the obstacles. Finally, the display or buzzer emits image and sound prompts, making it easier and safer for the driver to reverse. Product Function Description 1. When the reverse gear is engaged, the system automatically enters the detection working mode 2. 30CM-250CM centimeter level display accuracy, precise display of obstacle distance 3. Green, yellow, and red seven segment LED light strips display the distance of obstacles 4. Indication of the position and direction of left and right obstacles 5. Bi.Bi.Bi. The buzzing sound provides a step-by-step alarm prompt, with the closer the distance, the more rapid the alarm sound; 6. Dual CPU response is fast, probe self check function, probe abnormal status prompt to avoid reverse collision caused by probe damage; 7. Embedded probe installation method, simple and convenient installation Rated working voltage: 12V DC (9.6~16V DC wide voltage operation) Ultrasonic frequency: 40kHz ± 1kHz Detection distance: 30CM~250CM Alarm volume: ≥ 80dB Waterproof grade IP68