wireless reversing sensors

Wireless Parking Sensor With LCD Display Model: PW670D Key Features: 1.Automatic activation when the reverse gear is chosen . 2.3-color backlit display(blue/purple/red) changes to show diferent alert ranges. 3.Car icon and digit showing in LCD display to indicate different distance and orientation of the obstacle. 4.Voice alert ,Beep alert, Mute mode,System On/off,different models is selectable. 5.Suitable for 2/4/6/8 sensors .6 or 8 sensors system, complete front and rear