Feature:1. Manufacturing Material: The controller housing is made of high quality metal with grooves designed to protect the internal circuitry from thermal overload due to good heat dissipation.2. Brushless Motor Controller: Electric bike brushless motor controller provides steady speed, sensitive braking and directional change control.3. High Performance Wire and Durable Interface: The high performance wire and durable interface ensure low failure rate for long term use. Suitable for 36V, 48V 250W, 350W motors.4. Easy Maintenance: For mountain bike lithium battery modification, easy maintenance, electric bike and moped modification conversion, greatly improve the fun of riding, suitable for cyclists like challenges.5. Simple Operation: Simple to operate, easy to use, easy to install and disassemble. Without any difficult requirements even though you use it for the first time.Specification:Item Type: Electric Bicycle Brushless Square Wave ControllerWeight: Approx.213g / 7.5ozMaterial: Aluminum AlloyVoltage: 36V, 48VCurrent: 15A.Package List:1 x Controller 1 x ManualNote:The communication protocol is No.2 communication protocol and for UART communication protocol.