GreenYi Video Parking 4 Sensors Car Reverse Backup Rear Buzzer Radar Monitor System, Support Display Image and Sound Alert Features: 1) Using Double CPU digital fill image sensor designed for automotive Rear View development design, using digital fill and software technology, clear image and distance on the monitor.2) -30 to +60 temperature range of application, The factory after the high preure water immersion test and 12 hours on the electrical aging test, multilayer waterproof design, truly high preure washing and immersion .3) The Sensors Installed in the Rear bumper of the car and included a Drill . Detect small objects and bars.4) 6m Video cable connected with any TFT-LCD screen , power cable connection car Reversing power supply, Reversing, the monitoring Parking system automatically start working, you can clearly see the car Rear the distance and Image.5) Note : this link not included TFT Monitor and Rear View Camera . Specifications: 1. Rate Voltage: DC 12V2. Operating Voltage Range: 9 to 16V3. Rate Current: 20 to 200mA4. Detecting distance: 0.3 to 2m5. Ultrasonic Frequency: 40KHz6. Step-up buzzer alarm Package included: 1 x Main Control Box1 x AV Cable1 x Speaker4 x 22mm Sensors with 2.5m Line1 x Saw drill head1 x Power/Video Cable2 x Double Side Sticker1 x User manual