Feature 1It can effectively improve the safety of drivers in reversing and parking, and can help increase the safety of passengers, pedestrians, and family members who happen to be around the moving vehicles. 2With a selfchecking system, it can automatically check for abnormal conditions and avoid reversing collisions. The advanced chipset has a wider detection range and more sensitive detection. 3Provide 4pcs highly sensitive radar sensors, digital LED display number and light, which is very clear. 4This is a set of vehicle reversing system components, equipped with a drill bit, which is convenient for drilling, installation and operation. 5The sensor is made of highquality material ABS, which is sandproof, dustproof, waterproof and freezeproof, and maintains good performance even in harsh environments.Item Type: LEDParkingSensorMaterial: ABSFitment: UniversalWorking Voltage: 12V DCRated Working Range: 10.5V-16V DCCurrent Rate: 100mA-300mADetection Distance: Approx. 0.3-2.0m/1-6.6ftUltrasonic Frequency: 40KHzOperating Temperature of The Control Module: -30-80Wiring:Positive-Red LineGround Wire-Black LineCircumstance showed below will affect the detecting accuracy:Slippery inclination Slippery ball shape Over-high installatior position Sound absorbed object Special circumstance Special object .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List4 x Parking Sensor with 2.5m/8.2ft Cable2 x Double-Sided Sticker1 x Installation Instruction1 x Drill1 x Power Cable1 x Host Control1 x LED DisplayNoteCheck the functions after installation and then you can use.The speed should less than 5km/h;Different objects have different detecting distance;Heavy rain snow\sensor dirty isensor damaged will affect the detecting results;This product is only for the purpose of assistance and alerting, it will not reduce the responsibility of the driver when there is happened accidence. We will not take any responsibility if there is happened accidence.