description":"KKmoon Car LED Parking Reverse Backup Radar System + 4 Sensor Black Features: Self-test function. Detecting distance: 0-2.5m. 2-side, 3 colors. Insert-in sensors. LED digital display with BiBi sound reminder. Volume switch. Easy to install. 4 sensor system and advance chipset for enhanced coverage and detection. Help 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. Specifications: Rated voltage: 12V Operation Voltage range: 9-16V Rated Current: 20-200mA Detecting distance: 0-2.5m Ultrasonic frequency: 40KHz Working temperature: -30-+70â Display working temperature: -20-+60â Main control box size: 8.5 * 7 * 2.3cm Net weight: 376g Package including: 1 * Main Control Box 1 * LED Display 4 * Sensors 1 * Power Cable 1 * Hole Saw 2 * Double Side Sticker 1 * User Manual