Grooved Metal Shell: The controller shell is made of premium metal with groove design. Due to its good heat dissipation function, it can protect the internal circuit to avoid thermal overload. ABS Panel: The display panel is made of premium ABS material, which is light, durable, fine and has good toughness and waterproof performance, providing better protection for the internal circuit and making it more durable. Multiple Functions: When riding a bike, the product will display many useful data on your bike, such as switch buttons, light switches, battery power display and other functions. A display screen can let you keep track of the situation. 1500W Motor Applicable: 35A controller kit is applicable to 1500W motor; Main applications: DIY electric bicycle, electric scooter, folding bikes, etc; It is easy to maintain, greatly improves the fun of riding, and is suitable for cyclists who like challenges. Item Type: Electric Bicycle Conversion Kit Material: ABS, rubber, aluminum alloy, metal Gross Weight: 1508g/53.2oz Controller Size: 185x80x45mm/7.3×3.1×1.8in Current: 35A Rated Voltage of Controller: DC 36V 48V Controller Speed Setting: 1.1-4.2V Applicable Motor Power: 1500W. 1 x Controller Bag. 1 x Controller Instruction. 1 x Panel Instruction. We will reply your message within 48 hours. If you do not receive our reply within 48 hours, pls. Post a message again because sometimes our message system may block some emails. If you are satisfied with our service, pls. Our aim is to provide Level Customer Service, your recognition will encourage us greatly and serve you better. We strive to keep all our customers satisfy. We will do our up most to exceed your expectations in customer service, communication and dispatching of your orders.