5S Protocol 24V 36V 48V LCD C600 Big 4 Inch Big Screen Electric Bicycle Display with Waterproof Connector Model: C600 Waterproof Connector Voltage: 24V 36V 48V Agreement: 5S protocol. Works with controller that has the same protocol. Before purchasing, please confirm whether the controller is compatible with the display protocol. Q&A Q: Why can't it be turned on? A: Check whether the connection between the instrument wiring harness and the controller connector is secure. Q: How to deal with the fault code displayed by the instrument? A: First, identify the corresponding issue according to the displayed error code. If you cannot resolve it, please go to an electric vehicle service point for repair. Color: Black Material: Plastic Package Contents: 1 x LCD C600 display Only the above package content, other products are not included. Note: Lighting and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.