P3C 5PIN Electric Bike LCD Display Meter with USB UART for Mountain E Scooter Waterproof Backlight Panel The product shell is made of ABS and metal components, with a liquid crystal display screen<br> Applicable handlebar size 22.2mm IP65.<br> Q:After connecting the instrument, the instrument interface displays P3C<br> A:<br> The communication protocol used in the instrument and controller does not match, and the two cannot communicate;<br> The for original-condition of the entire vehicle is already in poor condition. One of the three devices, namely the booster, rotary knob, and motor, not only breaks down but also has a short circuit. At this time, the controller not only cannot detect it, but also causes the controller to not work, resulting in communication failure between the instrument panel and the controller<br> Colour:Black<br> Material:ABS<br> Package Contents:<br> 1 x Electric Bike LCD Display Meter<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.