Feature: 1. Manufacturing Material: The controller housing is made of high quality metal material, groove design, with good heat dissipation function, can protect the internal circuit, so as to avoid thermal overload. 2. Stable Speed and Sensitive Control: Brushless motor controllers provide steady speed and sensitive control of braking and directional changes. 3. Easy to Install and Use: The electric bicycle brushless motor controller is easy to install and use, equipped with LCD display and suitable for 22.5mm / 0.9in handlebars. 4. 3 Mode Sine Wave Controller: 3 mode sine wave controller, when the motor hall is normal, it runs in sine wave mode; when the motor hall is damaged, it automatically switches to square wave mode; when all the motor halls are damaged or the motor has no hall, it runs in hall free mode. 5. Product Features: 24V, 36V and 48V universal voltage, 350W power, 13A current limiting. Specification: Item Type: Electric Bike Brushless Motor ControllerWeight: Approx.524g / 18.5oz Material: Aluminum Alloy Controller Box Size: Approx.9 x 5.2 x 3cm / 3.5 x 2.0 x 1.2in Voltage: 24V, 36V, 48V Universal Power: 350W Current Limiting: 13A Low Voltage: DC19V, 30V, 42V. Package List: 1 x Controller 1 x Instrument1 x Manual