4 Sensors LCD Display Buzzer Reversing Radar Car Parking Sensor Kit Reverse Backup Car Parking Radar Monitor Main features: 1.A small light(dot)indicates proper functioning of the system after being activated 2.Digital distance Colored LCD Display 3.LED's(green,yellow and red)indicate different distances as well as orientation of the obstacle 4.Different alert beeping intervals indicate different distances of the obstacle 5.4 Round Recessed Sensors 6.CPU(Microchip)From U.S.A Parking sensor use for :it's universal for all DC12V car or vehicle,van,caravan,trailer etc. Package include: 1x LCD display monitor 1x Contorl box 4x Sensors 1x Power cable 1x 22mm holesaw 1x Manual Return Policy All of our items come with a 30-day free return policy. If you need to return, please contact us, let us know the detailed problem and send us some pictures for confirmation. We reserve the right to refuse any returns for objective reasons. Shipping Policy All of our items are shipped free with tracking numbers. Orders will be shipped within 3 working days upon receipt of payment. Most orders will be shipped within 1 working day. In most cases, shipping takes 8-12 working days.