Description: The buzzer with different sounds.is used to remind the driver that if there is an obstacle 1.8m-1.5m behind the car when reversing, the buzzer will start to work. The faster the buzzer, the closer the vehicle is to the obstacle. It can notify the driver of obstacles around by sound, and eliminates the driver from looking forward and backward when parking, reversing and starting the vehicle. The product uses the principle of ultrasonic distance measurement. When an obstacle is encountered, an echo signal is generated. After the sensor receives the echo signal, the controller performs data processing and judges the obstacle, then display shows the distance and sends out other warning signals to get timely warnings, so that the driver can be aware of when reversing. It is made of ABS material. The length of the product is 5cm, the width is 2.5cm,and the height is 2.9cm. It is suitable for Toyota Corolla/Camry. Its OE number is 89341-33080. Item Name: Parking Sensor Material:ABS Compatible Models: for Toyota Corolla/Camry Size:5cmx2.5cmx2.9cm/1.97inx0.98inx1.14in Notes: Due to the light and screen setting difference, the product's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 X Parking Sensor