Features: 1. The controller shell is made of aluminum alloy, which can protect 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 braking and direction changes. 3. The wires and interfaces are durable and ensure low malfunction of longtime use. 4. The interfaces have instruction labels on them for your easy installation. 5. Suitable for electric bicycles and scooter.