JD30A fully waterproof controller. Controller kit for1000W motors. And suitable for DIY electric bicycles, electric cars, electric , folding cars, etc. The bicycle lithium battery conversion kit greatly enhances the driving pleasure and is suitable for bicycle enthusiasts. Packing list: Bicycle lithium battery conversion kit includes 30A controller, SW900 meter, 109R thumb throttle, KT-8C boost sensor, one drag five wires + a pair of brake levers with power off Great features: While driving, the product displays a lot of useful data about the bike, such as the on/off button, light switch, battery level indicator and other features. The instrument has a display. Excellent performance: The SW900 meter is made of high-quality ABS material, which is light, strong, well-crafted, tough, and waterproof, providing excellent protection for the internal circuit. Good heat dissipation: the controller shell is made of high-quality aluminum alloy, with a concave design, and good heat dissipation protects the internal circuit from the influence of heat load. Color: Black & Silver Material: metal+plastic Package Contents: 1 x controller 1 x instrument 1 x finger handle 1 x boost sensor 1 x one drag five wires 1 pair off brake lever Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.