I ordered it and just installed parking sensors under the description made on the site amazon. Well packaged product of good quality buzzer appearance, son long enough for any installation mode. However, after installation, came the disappointments: the buzzer sounds continuously when the engagement of walking back, the emitted sound is not regular but low until it transmits continuously to approaches an obstacle that is 50 cm. But according to the explanation given on the website and on the notice, it appears that the sound is not continuously issue only from 30 cm and the radar starts beeping at one approach obstacle which is about 1.50 m. Also the sound is not always regular. The problem may be with the defective Boitie rrelais but radar has been installed, with puncture and disassembly-reassembly of the rear bumper. Should that one can send me another relay box under secured to replace the possibly defective. But how do ??????? I look forward to a response from Amazon
