... cm Weight: 14 KG car parking sensor ,reverse sensor,backup sensor,LED display parking sensor,LCD Display parking sensor,bluetooth rearview mirror1.Automatically ... .3m; Buzzer volume: 80db; Screen type: Digital tube4.Wireless car parking sensor, no need to run a wire from the front ... box at the back of the vehicle. 5.Speaker car parking sensor, it can tell you the alarm distance in English ...