Features： 1、Fully Configured: The bike modification set includes 15A controller, S866 panel, quick release dial, power assist sensor, and controller storage bag. It can be used alone or in combination, you can DIY according to your own situation. 2、Aluminum Alloy Housing: The controller housing adopts aluminum alloy material,with heat dissipation performance and durable wiring. 3、Multiple Data Displaying: The panel can display speed, power assisted gear, power, fault prompt, total mileage, single mileage, single riding time, etc., which is convenient and helps you keep abreast of riding dynamics. 4、LCD S866 Panel: The S866 panel shell is made of ABS material and supports backlight brightness adjustment; buttons are operated quickly, the interface is clear, and it is easy to use. 5、Application: The controller is suitable for 36V 48V 250W motors. The LCD panel and dial are suitable for 22.2mm handlebars, and the panel match the No. 2 communication protocol. Easy to install and use. Specification： ItemType: Electric Bike Controller Set Gross Weight: 695g / 24.5oz Controller Parameters: Controller Material: Aluminum alloy Current: 15A Voltage: DC 36V 48V Speed Setting: 1-4.2V dual mode Brake Input: Low level Panel Parameters: Panel Material: ABS, acrylic Applicable Handlebar Mount: 22.2mm / 0.9in diameter handlebar Voltage: 24V 36V 48V Waterproof Grade: IP65 Interface: 5pin Communication Protocol: No. 2 communication protocol Display Function: Speed display, power assisted gear display, power indicator, fault prompt, total mileage, single mileage, single driving time display Package List： 1 x Controller 1 x Meter 1 x Dial 1 x Power Assist Sensor Wiring 1 x Power Assist Sensor Boosting Sheet 1 x Power Assist Sensor Ring 2 x Fixed Belt 1 x Controller Storage Bag   1 x Meter Manual