Features: The controller shell is made of aluminium alloy with design, which can protect the inner circuit due to good heat dissipation feature to avoid thermal overloading. This item is a brushless motor controller, it can provide steady speed and sensitive control of braking and direction changes. The wires and interfaces are , and ensure low malfunction of long time use. The interfaces have instruction labels on them for your easy installation. Suitable for electric , scooter, etc. Spec: Material: Aluminium alloy Rated Working Voltage: 36/48V Rated Power: 250W Current: 13A Low Voltage 31/42V Suitable Motor Phrase Angle: 60 / 120 degree Suitable for: electric , scooter, etc Size: Approx. 9 x 5.3 x 3cm / 3.5 x 2 x 1.18inch Weight: Approx. 202g Package List: 1 x Brushless Controller