Features 1、Controller Housing: The controller housing is made of high quality aluminum alloy with a grooved design, which protects the internal circuits from thermal overload due to good heat dissipation. 2、ABS Plastic Display: The S810 display is made of high quality ABS material, light, strong and durable, fine workmanship, good toughness and waterproof performance, providing better protection for the internal circuit. 3、Display Useful Data: S810 display is compatible with 36V and 48V voltage, intelligent power display, truly reflects battery power, records power consumption in real time, and ensures riding mileage. 4、Good Performance: The high, medium and low analog torque thrust comes from the switch gear position and the gear position indication display, and has the gear position memory function. It adopts five wire digital communication and has multi function self‑tuning function parameters. Users can customize settings according to different models, such as motor parameters, speed parameters, and speed parameters. 5、Scope of Application: 15A controller kit is suitable for 250W 350W motor. And suitable for DIY electric bicycles, electric vehicles, electric scooters, folding vehicles, etc. Bicycle lithium battery modification greatly improves riding fun, suitable for cyclists who like challenges. 6、Package Content: Bicycle lithium battery modification controller kit includes 15A controller + LED S810 display + 130X thumb throttle + 8C power assist sensor + 1 to 2 connecting line. Item Type: Bicycle Lithium Battery Modification 15A Controller LED-S810 Display Kit Material: Aluminum Alloy + ABS Plastic Color: As Pictures Shown Weight: Approx. 509g / 18.0oz Product Size: Controller Box: Approx. 82x52x30mm / 3.2x2.0x1.2in Controller Rated Voltage: DC 36V/48V Controller Maximum Current: 15A Controller Speed Setting: 1-4.2V Controller Brake Input: Low Level Booster: 1:5 Applicable Motor Power: 250W, 350W Connector Type: Full Waterproof Connector Controller Line Definition: 1. Red, black single wire: power wire 2. Black single large wire (9pin): motor wire 3. Black single wire (9pin): 1 to 2 wire 4. Black single wire (3pin): power assist sensor wire 5. Black single wire (2pin): light wire Package List 1 x Controller 1 x Display 1 x Thumb Throttle 1 x Power Assist Sensor 1 x Controller Wiring Manual 1 x 1 to 2 Connecting Line