The wireless car reversing radar assist automatically detects obstacles behind the car when reversing and automatically turns on and off. Crescent-shaped LED step-by-step heart rate display function, audio + digital step-by-step instructions. Intelligent microcomputer control, accurate digital display of obstacle distance, accurate and reliable. Sound + high-brightness LED distance message is not affected by the environment, especially on rainy days and nights. The car reversing sensor features embedded installation, multi-color configuration, the sensor is refined and compact and easy to install.