Key features: The distance detection system will switch on automatically when car is operating 4/6/8sensors design, 6/8 sensor designed for detecting obstacles from both front and rear bumper of car Intelligent color Samsung VFD display Visual and acoustic alert /showing distance by digit/location Indicator /motive color segments warning Dynamic picture display when no obstacle; Operating mode:On(visual and acoustic alert)/Off(no any alert) /Mute(only visual alert) Embedded installation Technical data: Working Voltage: 10~ 15 V Max. Power: 3.6W Working temperature: - 35℃~ + 70 ℃ Detecting distance: 0.1 m ~ 1.5 m Measuring error: ?.05 m Sensor detection angle: 60 ? Alarming Volume of built-in Siren: 80dB Alarming Volume of external Siren: 80dB Response Time: 250 ms Ultrasonic Frequency: 40KHz Current Consumption: 240~300 mA