Feature:1. Full Kit: The package contains 15A waterproof controller, S810 panel, 130X thumb throttle, 8C speed assist, brake handle, 1 to 5 connector and tail lamp, full kit has convenient operation.2. 36V/48V Universal: Panel can be compatible with 36V and 48V voltage, intelligent power display, truly show battery power, real time record of power consumption, ensure cycling mileage.3. Controller Housing: Controller outer shell is metal material with grooves design, that the case has good heat dissipation function, able to protect the internal circuit and avoid thermal overload.4. Gear Memory: High, medium and low analog torque thrust comes from switch gear and gear indication display, with gear memory function, power on can automatically restore the power off gear state.5. Customizable Parameters: Adopt 5 wire digital communication, with multi functional self setting function parameters, users can customize according to different models, such as motor parameters, speed parameters, speed parameters.Specification:Item Type: Electric Bike Conversion KitMaterial: Aluminum Alloy + PlasticApplication: For Bicycle Battery ConversionWeight: Approx.857g/30.2ozProduct Size: Controller Box: Approx.81x51x30mm/3.2x2.0x1.2inController Connector Type: Waterproof ConnectorRated Voltage Of The Controller: DC 36V/48VController Maximum Current: 15AController Speed Setting: 1-4.2VController Brake Input: Low LevelBOOSTER: 1:5Applicable Motor Power: 250W.Package List:1 x Controller1 x S810 Panel1 x Thumb Throttle1 x 8C Speed Assist2 x Brake Handle1 x 1 to 5 Connector1 x Lamp Cable1 x Tail Lamp1 x Controller Wiring ManualNote:1. Need to be used with the product with the communication protocol.2. Please allow errors due to manual measurement. Thanks for your understanding.