This parking sensor system is brand new, with LED displayer and Buzzer unit, You can fix the LED displayer unit to somewhere close to driver seat, also you can fix the unit anywhere in the car to use it as buzzer alarm only. what are in the box: 1. CPU Centre cortrol unit with power cable to connect reversing light. 2. 4 sensors in black colour (can be colour coated) with 2 meters cable to connector the centre cortrol unit. 3. LED displayer with Buzzer unit 4. 21mm Hole Saw, which is exactly size for the sensors. 5. 4 sensors rings with angle for Not Vertical bumper adjustment. 6. user's manual with installation guide. We also can provide white, sliver, blue and gray colour sensors, see the picture below, please note what colour do you need when you make payment, otherwise black sensors will be sent, if you want to spray colour on the top of sensors, please choose black colour. 
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