Gx-parking-2 Automatic detect obstacle when reversing. Detected in front & back All weather design Super-wide detection angle Healthy Chirping warning, design at safety hearing range for human body 2 and 4 sensors optional, Sensor color optional. Original PHILIPS Chip, Quality guarantee Sensor color optional Product Technical Parameter working voltage : 10--15 V / DC Power : Pmax < 5W Working temperture : -20 ～+60 Display range : S <= 1.8 Warning range<= 1.5M Sound volume : .= 70 dB We can supply other type of goods you required,please contact us!