1. Made of premium metal and plastic, which is sturdy and durable with long service life.2. High Performance: KT system features more stable and efficient with lower current consumption.3. Equipped with one PAS sensor, auxiliary sensor 8 magnetic,KT-LED880 display(Only used with KT controller).4. This one is square wave controller, which supports both 36V and 48V.5. The backlight design enables you to see screen in a clear way even under dim environment. Button operation is super convenient and simple.The brushless controller features silent working and sensitive to the state of electric bike. Stable in performance and excellent in reliability.Easy to install and use. You can rotate the voltage value in real time to determine the remaining charge accurately.The waterproof controller kit for e-bike can only be used with motor which has sensor. KT controller is suitable for 36V/48V/250W/350W motors and electric bicycles.Controller Description:1. KT controller is compatible with KT display only. Please make sure your system is KT system.2. If you have any problems, please contact the store's customer service.3. This controller is suitable for brushless motor and Kunteng display only. Not suitable for electric scooters.4. Work voltage: Support both 36V and 48V.5. Suitable for brushless non-gear hub motor 250W/350W.6. This one is Square Wave Controller.Colour:blackMaterial:Plastic + MetalPackage Contents:1 x Controller1 x Meter1 x Dial1 x sensorOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.