Brushless motor sine wave three-mode 30A 12-tube controller. controller kit is suitable for 750W/1000W motors. And suitable for DIY electric bikes, electric cars, electric scooters, folding bikes, etc. The bicycle lithium battery conversion kit greatly enhances the driving fun and is suitable for bicycle enthusiasts. Packing list: Bicycle Li-ion battery conversion kit including 30A controller, S866 meter, 109R thumb throttle,8C boost sensor+One to two lines. Excellent features: During driving the product displays a lot of useful data about the bike, such as on/off buttons, light switches, battery level indicator and other functions. The instrument has a display. Excellent performance: The S866 meter is made of high quality material, which is light, strong, well made, tough, waterproof and provides excellent protection for the internal circuitry. Good heat dissipation: The controller housing is made of high quality aluminium alloy with a recessed design, which protects the internal circuitry from thermal loads due to good heat dissipation. Colour:Photo Color Material:metal+plastic Package Contents: 1 x controller 1 x Meter 1 x finger dial 1 booster magnetic point 1 x One drag two lines 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.