Reverse parking sensors are becoming increasingly popular among car owners as they provide a useful aid when parking in tight spaces. These sensors detect obstacles behind the vehicle and alert the driver with a warning sound or visual indicator. One of the most common types of reverse parking sensors is the one that uses sensors, a buzzer, and a distance indication LCD to provide accurate feedback to the driver. These sensors are typically mounted on the rear bumper of the car and use ultrasonic waves to detect obstacles within a certain range. When an obstacle is detected, the sensors send a signal to the control unit, which then activates the buzzer and the distance indication LCD. The buzzer emits a warning sound that increases in intensity as the vehicle gets closer to the obstacle, while the distance indication LCD displays the distance between the car and the obstacle in either meters or feet.