This Bafang 810S UART LCD display works with Bafang BBS01, BBS02 & BBSHD mid drive motors, and it is NOT compatible with all other motors. LCD Display: 3.5 inch HD screen enables easy reading of the data on it while riding. Automatic Backlight Display: This display will adjust brightness automatically which depending on the environment brightness in different situations. IPX5 Grade Waterproof, works fine in sprinkles to moderate rain environment, enjoy riding in any weather. Rated Voltage(DCV): 24V/36V/48V. Holder (mm):Ø 22.2/25.4/31.8. Carefully study customer needs, according to the customer’s actual installation situation to provide a detailed, suitable solution environment. Try our best to meet the reasonable needs of customers. Keep close contact with customers during each business period. Co-operate with customers in a friendly manner to meet their needs with the best quality products. Train customers how to install and use the e-bikes for free. Perfect after-sales service to help customers solve problems in the process of using. Provide regular tracking service for customers. Please indicate your personal requirements such as colour, packaging etc. If you receive an item and are not satisfied, please contact me before returning it.