【Waterproof Controller】This KT-15A ebike controller is designed specifically for brushless motors and is waterproof, the circuit won't be burnt out when using it in wet conditions. 【Compact and Portable】With its compact size and lightweight design, this controller is easy to carry and install on your electric bicycle. 【Multiple Connectors】This controller comes with various connectors, including a 9pin waterproof for the motor, a red-black for power, a 3pin waterproof for PAS, and a 1T4 cable for throttle, display, and e-brake. 【Compatible with Multiple Voltages】This KT-15A controller is compatible with both 36V and 48V systems, offering flexibility for different electric bicycle setups. [FRIENDLY CUSTOMER SERVICE] If you have any questions about the product, please email us. We will do our to solve the problem for you.