1、Full Kit: There is 22A controller, GD01 panel, 130X thumb throttle, 8C power assist sensor and 1T2 connecting line included in the package, full kit will be enough to meet your needs to upgrade your bike. 2、Controller Outer Housing: The controller housing is made of high quality metal with grooves which is designed to protect the internal circuitry from thermal overload due to good heat dissipation effect. 3、GD01 Panel: The panel is made of high quality ABS material, light and durable, with fine workmanship, good toughness and waterproof performance, providing better protection for the internal circuit and making it more durable. 4、Panel Function: GD01 panel can be compatible with 36V and 48V voltages. When riding a bicycle, the product will display many useful data on your bicycle, such as: intelligent power display, truly reflect the battery power, record the power consumption in real time, ensure the riding mileage, headlamp control, backlight brightness 3 level adjustment, five gear control, mileage display, fault code display, help promote the mode of 6km / h, etc. 5、Widely Use: Applicable to 500W motor. Main uses: DIY electric bicycle, electric vehicle, electric scooter, folding car, etc. Easy to maintain, lithium battery modification of bicycle greatly improves the fun of riding, which is suitable for cyclists who like challenges.