Car Parking Sensor System

KKmoon Car LED Parking Reverse Backup Radar System with Backlight Display + 4 Sensors BlueFeatures: LED digital display with BiBi sound reminder. 4 sensor system, double CPU and advanced chipset to enhanced coverage and detection. Be beneficial to prevent dangerous and costly collisions. Help to provide increased safety for passengers, pedestrians and family members who happen to be around the moving vehicle. Detect small children and low walls as well. Anti-freeze and rain proof. Easy installation and operation. With a drill head, convenient to drill hole.Specifications: Sensor color: Dark Blue Rate voltage: DC12V Operation voltage range: 9-16V Rate current: 20mA-200mA Detecting distance: 0-2.5m Ultrasonic frequency: 40KHz Control moudle working temperature: -30 - +70 celcius degree Display working temperature: -20 - +60 celcius degree Sensor size(H * D): 1.9 * 2.5cm / 0.75 * 0.98in LED display size: 9.9 * 2 * 2.6cm / 3.9 * 0.79 * 1.02in Main control box size: 10.5 * 6 * 2.3cm / 4.13 * 2.36 * 0.91in Display weight: 89g / 3.15oz Main control box weight: 63g / 2.22oz Item weight: 355g / 12.52oz