Kit of 4 parking sensors with horn Professional kit complete with 4 sensors with adjustable and / or deactivable acoustic warning device suitable for reversing maneuvers with a wide 2,5Mt maximum quality distance detection system. at 0Cm. Activation of the automatic system with the insertion of the reverse gear, 4 quality sensors for a complete coverage of the entire width of the vehicle, designed for all climatic conditions, sound alarm included, distance detection from 2.5 meters to 0cm. Parking sensors facilitate all parking maneuvers, even the most difficult reversing. They guarantee safe maneuvers by warning of the presence of people or animals or things. Parking sensors also detect invisible obstacles, avoiding costly repairs. No more bumps to park, therefore a safe help in any situation. Ideal for cars, vans, and any other vehicle.Approaching the obstacle is indicated by an intermittent acoustic / audible signal, the frequency of which increases as the distance from the obstacle decreases until it becomes continuous near it. These sensors are activated automatically when reverse gear is engaged and monitor your maneuvers step by step. Features Rated voltage: DC 12V. Working voltage: DC 9V-16V. Current: 20-200mA Ultrasound frequency: 40KHz Operating temperature: -30 ° C- + 70 ° C. Distance sensing: 0cm - 2.5m Double shielded sensors and wiring, quick release plug system. Self-test function Dual CPU chipset system with protective circuitry avoiding overheating or overloading It does not suffer radio interference from other wireless devices Antifreeze and waterproof material for a long service life EAN number: 8053323552031 Package contents                                                                                         1 Adjustable audible buzzer with 5m cable.    4 16.5mm bumper wire SENSORS, 3Mt cable length. 4 Mounting brackets for sensors. 1 control unit. 1 x drill bit / cutter suitable for bumper holes. 1 user and installation manual.