Features： 1、Compatible Motor: The electric bicycle controller set is applicable to 1000W motor, which can be used for modify electric bicycles, greatly improving the riding pleasure, and suitable for those who like challenges. 2、Good Heat Dissipation: The controller shell is made of metal with indentation design. Due to its good heat dissipation function, it can give protection to the internal circuit and avoid thermal overload. 3、Waterproof Meter: The meter is made of y ABS material, which is light and sturdy, has fine workmanship, good toughness and waterproof performance, providing better protection for the internal circuit and making it more durable. 4、Multifunctional Meter: S866 meter has a variety of functions. When riding, it will display many useful data on your bicycle, such as switch button, light switch, battery power display and other functions. The meter has a display screen, you can grasp the date at any time. 5、Applicability: The set includes a controller and a S866 meter, which is applicable to DIY electric bicycle, electric scooter, folding bikes, etc and is easy to maintain. Specification： Item Type: Electric bicycle controller set Material: ABS, rubber, aluminum alloy, metal Weight: Approx. 639g/22.5oz Applicable: S866 all ordinary controllers small kit for 1000W motors Controller Size: 15x8x4cm/5.9x3.1x1.6in Maximum Current Limit of Controller: 30A ± 1A Rated Power: 1000W Brake: High and low level Package List： 1 x Controller 1 x S866 Meter 2 x Instructions