U.S. buyer attention:The areas where the US warehouse does not deliver goods are: Hawaii, Alaska, Puerto Rico, Guam and other US overseas territories. And the military addre. But you can choose ship from China.Spanish buyers attention:If your addre includes following postal code please do not choose the Spanish warehouse.The zip code starts with 35/38.Overseas warehouse cannot be delivered. But you can choose ship from China 4 Sensors LEDDisplayCar Parking Sensor Kit Auto Reverse BackupradarMonitor Detector System UniversalDescriptions:The reversingradaris designed based on the principle that bats fly at high speed in the night without colliding with any obstacles. The probe is mounted on the rear bumper. According to different prices and brands, the probes are divided into two, three, four, six and eight, respectively. The probe radiates at a 45-degree angle and searches for the target up and down. Its biggest advantage is that it can explore obstacles that are lower than the bumper and the driver is difficult to see from the rear window, and alarm, such as flower beds, children playing in the back of the car.When the gear lever is engaged in the reverse gear, the reversingradarautomatically starts working, and the ranging range is 0.3 to 2.5 meters, so it is very practical for the driver when parking.Specifications:Sensor color: Black/ White/ Silver/ Red/ Blue/ Grey/ GoldSupply voltage: 10.5~15V (12V nominal)Current consumption: 200 mA Max.Working temperature: 20~65CStorage temperature: 35~85CDiameter: 22mm/0.87"Obstacle detection: 150cm/59 inches from bumper (post dia. 80mm/3.15 inches)Reliability over time: satisfies the strictest automotive standardsTechnical parametersDetection distance: 0.3m/0.4m ~ 2.5mAlarm distance: 0.3m/0.4m ~ 1.5mWorking frequency: 40kHzWorking voltage: 12V DCConsumption current: 20-200mAWorking temperature: -30~ +70 CAlarm volume: 70 ~ 85dB (at 30cm)Maximum power: 2WIMPORTANT NOTICE:This device has been designed as a driver aid and must not be considered infallible.Always manoeuvre vehicles with caution and using common sense.Manoeuvre your car slowly in the interest of your own safety and that of others.Always stop the vehicle when the hazard warning is activated, in order to take in account movement inertia.Periodically perform function checks on the sensors and ensure that they are clean at all times.In the event of rain, snow or ice, the sensors may be subject to a temporary drop in sensitivity of approximately 20%. Drive with even grater caution until evaporation is complete.Notes:1. There may be slight size deviations due to manual measurement, different measuring methods and tools.2. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor. 1 X LED Display Indicator1 X Command Module4 X Ultrasonic Sensors1 X Power Supply Cable1 X Hole Borer1 X Acceory Kit1 X Instruction Manual