Features： 1、Complete Kit: This electric bicycle lithium battery modification kit contains a 17A three mode sine wave controller, GD01 LCD meter, which can be used alone or in combination. 2、Application: Suitable for 24V, 36V, 48V 250W‑350W Hall brushless motor, which can be used for the modification of electric bicycles, electric scooters, replacement of damaged parts. 3、Hall Motor: The controller can operate with or without Hall brushless motor, with self learning function, sine wave mode when the motor Hall works normally, and switch to Hall free square wave mode if damaged. 4、LCD Display: The LCD instrument can display riding speed, riding mileage, assist gear, power indication, fault code prompt, headlight display, motor running power, etc. 5、Applicable Handlebar: The LCD display applicable for 22.2mm handlebars, the controller adopts aluminum alloy shell with groove design, with good heat dissipation to prevent thermal overload. Specification： Item Type: Three Mode Sine Wave Controller Controller Parameters: Material: Aluminum alloy Current: 17±1A Voltage: DC 24V 36V 48V Speed Setting: 1.1-4.2V Brake Input: Low level Applicable Motor: 250W-350W Instrument Parameters: Material: ABS+acrylic Applicable Handlebar: Approx. 22.2mm/0.87in Voltage: 24V 36V 48V Instrument Function: Display: Speed display, assist gear display, power indication, fault prompt, total mileage, single mileage, headlight display Package List： 1 x Three Mode Sine Wave Controller 1 x Instrument 1 x Controller Wiring Diagram 1 x Manual