Features: Easy to Use: When the vehicle is engaged in reverse gear, the reversing radars system automatically enters the detection working state. Accuracy: 30-250 centimeter-level display accuracy, accurately display the distance of obstacles, stop the vehicle in time. Easy to View: High-quality LCD digital display, real-time display of green, yellow and red 7-segment LED light bar to indicate obstacle distance. Sound Alarm: The "BiBiBi" buzzer will give a step-by-step alarm prompt, the closer the distance is, the faster the alarm sound will be. Reliable Quality: Dual CPU design, quick response, support probe self-check function, abnormal status prompt, preventing reverse collision caused by probe damage. Easy Installation: Flush mount design with drill bit for easy drilling on car bumper. It is compatible with 12 V vehicle in the market. Specifications: Material: ABS Parking Sensor Color: Black / White(optional) Parking Sensor Quantity: 4pcs / 8pcs(optional) Working Voltage: 12 V(9.6-16V Wide Voltage Operation) Working Current: 20-180mA Detection Distance: 300-2500mm Display Distance: 300-2500mm Alarm Volume: 80dB Working Temperature: -40-80 Frequency: 40KHz1KHz Display Size: 81 * 40 * 40mm/ 3.2 * 1.6 * 1.6in Control Box Size: 90 * 60 * 22mm/ 3.5 * 2.4 * 0.9in Sensor Size: 24 * 24 * 19mm/ 0.9 * 0.9 * 0.7in Package Size: 195 * 160 * 60mm/ 7.7 * 6.3 * 2.4in Package Weight: 4pcs: 430g/ 15.2oz 8pcs: 590g/ 20.8oz Packing List: 1 * Controller Host 1 * LCD Display (5m Cable Length) 8 * Probe (2.5m Cable Length) 1 * Power Cable (0.8m Cable Length) 1 * Drill Bit (Standard Diameter 22mm) 1 * Instruction Manual 2 * Stickers