VFD Display Parking Sensor High Quality and Competitive Price CE, FCC Approved ... Power supply: DC 10-15V / 24V; Work temperature:-40°C-+80°C; Alarm distance:2m-0.3m; Buzzer volume: 80db; Screen type ... 2, or 4, or 6, or 8 sensors.5.Wireless parking sensor,then it is no need to run a wire ... of the vehicle,also save labour cost.6.Speaker car parking sensor,it can tell you the alarm distance in english ...