GreenYi Visible Car Video Parking Sensor Reverse Backup Assistance Radar Alarm System + 13mm Adjustable Depth Sensors 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 pressure water immersion test and 12 hours on the electrical aging test, multilayer waterproof design, truly high pressure 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 12V 2. Operating Voltage Range: 9 to 16V 3. Rate Current: 20 to 200mA 4. Detecting distance: 0.3 to 2m 5. Ultrasonic Frequency: 40KHz 6. Step-up buzzer alarm Package included: 1 x Main Control Box 1 x AV Cable 1 x Speaker 4 x 16mm Sensors with 2.5m Line 1 x Saw drill head 1 x Power/Video Cable 2 x Double Side Sticker 1 x User manual