Autosonus p Sensor With LCD Display6 Black SensorsLCD DisplaySupply Voltage: 12V DCDetection Range: 0.3 - 2mBuzzer: 65 dbSensor Diameter: 22mmAutosonus Automotive Systems Co., Ltd. is a leading Chinese automotive after-market accessory manufacturer that is committed to providing the highest quality Car Backup Cameras & Monitors, Parking Sensors, Dash Cameras and more in the industry. We have a passion for automotive safety and after-market accessories and are proud of the unique products we bring to our customers. We stand behind our products with the best support and customer service you will find anywhere.