1. The controller shell is made of aluminium alloy, which can the inner circuit and good for heat dissipation to avoid thermal overloading.2. This item is a brushed motor controller, it can provide steady speed and sensitive control of and direction changes.3. The wires and interfaces are durable, and low malfunction of long time use.4. Suitable for electric bicycles and scooter.Rated Voltage: 36V/48VMatch Motor: 350W motorSuitable for: electric bicycles and scooterMaterial: aluminum alloycolour: silverPackage Contents: 1 x controllerOnly the above package content, other products are not included.Note: Light reflection 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.