Specification: Type: Car Parking Sensor Material: ABS Quantity: 1PC Color: Silver, White,Black Rate Current: 20~200mA Detecting distance: 0 - 2.5m Ultrasonic Frequency: 40KHz Working Temperature: -30~80C Display Working Temperature: -20~60C Rate Voltage: 12V Power: 5W Cable Length: 2.5m/8.2ft Diameter: 22mm/0.9 inch Features: Length of cable of sensor: 2.5m Detect small objects and bars Enable you to prevent dangerous and costly collisions Provide increased safety for passengers, pedestrians and family members who happen to be around the moving vehicle. Way of working: 1. When the vehicle is reversing, the rear radar automatically starts to work. 2. the end of the reversing, the radar in front of the car automatically opens, to detect, to prevent scratching, especially in the right front corner of the vehicle, 3. When the vehicle is not reversing, the brake is pressed, the front radar is turned on, and the work is stopped for about 10 seconds. Package: 1 x Parking Sensors