Features1Good Heat Dissipation of the Controller: The controller shell is made of prime metal with grooves to protect the internal circuit from thermal overload due to good heat dissipation. 2Controller: The voltage is 36V 48V, rated power is 350W, stable and reliable performance. With under voltage protection, over current protection, stall protection and other protection functions to ensure the use and safety of electric bicycles. 3Controller Provides Stable Speed: The brushless motor controller provides stable speed and sensitive control of braking and direction changes. 4Modification Kit: The kit also includes a ignition switch and a speed control knob switch, and two keys for your convenience. 5Widely Used: The controller is suitable for electric bicycles, electric tricycles and electric motorcycles, with a wide range of applications.SpecificationItem Type: Brushless ControllerWeight: 334g / 11.78ozMaterial: Aluminum Alloy ABS RubberController Rated Power: 350WPackage List1 x Brushless Controller1 x Ignition Switch2 x Key1 x Speed Control Knob Switch