SpecificationRate voltage: 12V sensor colorblackOperation Voltage range: 9V - 16VRate current: 20mA - 200mAFront Detecting distance: 0.3 - 0.8mRear Detecting distance: 0.3 - 2.5mUltrasonic frequency: 40KHzWorking temperature: -30 - 70 celcius degreeDisplay working temperature: -20 - 60 celcius degreeLED display size: 10 * 2 cmMain control box size: 10 * 7.2 *2.7cmMain control box weight: 84.7g Description100% New! The Car Reverse Radar Sensor System helps to prevent dangerous and costly collisions that occur so easily when behind the wheel. It also helps 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. Main Feature1. More features, small volume & lightweight. 2. Can simultaneously observe the three sets of data stream. 3. 8 sensor system, double CPU and advanced chipset for enhanced coverage and detection.4. With digital colored LED display (number & light). 5. Bi Bi Bi alarm prompts step by step, the closer the obstacles, the louder and faster the sound alert.6. Help to prevent dangerous and costly collisions. 7. Help to provide increased safety for passengers, pedestrians and family members who happen to be around the moving vehicle. 8. Detect small children and low walls as well. 9. Anti-freeze and rain proof.10. Easy to install.