1、Brushless motor controller can provide steady speed and sensitive control of braking and direction changes. 2、Aluminum alloy controller shell can protect the inner circuit due to good heat dissipation feature to avoid thermal overloading. 3、The wires and interfaces ensure low malfunction of long time use. 4、Electric brushless controller is suitable for most electric bicycles and electric scooter. The motor brushless controller drive motor starts more smoothly and makes riding more comfortable. Features: Brushless motor controller can provide steady speed and sensitive control of braking and direction changes. Aluminum alloy controller shell can protect the inner circuit due to good heat dissipation feature to avoid thermal overloading. The wires and interfaces ensure low malfunction of long time use. Electric brushless controller is suitable for most electric bicycles and electric scooter. Specification: Power: 250W / 350W (optional) Voltage: 36-48V Current: 13A Lower voltage: DC 30V/42V Suitable motor phrase angle: 120°/ 60° Material: Aluminum alloy Size: 90 * 52 * 30 mm / 3.5 * 2.0 * 1.2 in Package weight: approx. 196 g / 6.9 oz Package List: 1* Brushless Controller 1* Brushless Controller