The controller shell is made of aluminum alloy, which can protect the internal circuit, is conducive to heat dissipation and avoid thermal overload.The project is a brushless motor controller that provides stable speed and sensitive braking and direction change control.Wear resistant wires and connectors ensure low failure for long time use.There is a label on the interface to facilitate installation.Suitable for electric bicycles, scooters, etc.Description:Product Name: Motor Brushed ControllerMaterial: Aluminum alloyRated voltage: 12V, 24V, 36V, 48VUnder-voltage protection: 20 + 0.5V, 31.5 + 0.5V, 42 + 0.5VMatching motor: 500 W motorApplicable to: electric bicycle, scooter, etc.Controller is 8 connectors, if your controller is 7 connectors, that is one less door lock connector than my 8 connector controller. When installing my controller, you need to connect the red and blue wires on the door lock connector of my controller.Special note: The power cord should be connected strictly according to the name on the connector. It must not be misconnected, and the wrong connection will burn out.Package included:1 * Motor Brushed ControllerNote: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.