1Controller Shell: Made of metal with groove design. Due to its good heat dissipation function, it can protect the internal circuit and avoid thermal overload. 2Brushless Motor Controller: Can provide stable speed and sensitive control of braking and direction changes. 3Scope of Application: Electric bicycle brushless motor controller is easy to install and use, LCD display, suitable for 22.5mm/0.9in handlebars. 4Easy to Operate: Instrument socket can be connected to the instrument interface of the controller to realize the function. 5Operation Mode: When the motor Hall is normal, it runs in sine wave mode. When the motor Hall is damaged, it will automatically switch to square wave mode. When the motor Hall is damaged or the motor has no Hall, it runs in the no Hall mode. Item Type: Controller LCD Instrument Kit Color: As Pictures Shown Material: Aluminum Alloy Power: 350W Current Limit: 13A Low Voltage: DC 19/30/42V Voltage: 24V/36V/48V Universal Weight: Approx.584g/20.6oz Controller Box Size: Approx. 9x5.2x3cm/3.5x2.0x1.2in 1 x Controller 1 x Instrument 1 x Pair of Grip 1 x Manual