Electric Bike Brushed Controller Brush motor speed controller can provide steady speed, silent working, sensitive control of braking and direction changes. The wires and interfaces are durable, and ensure low malfunction of long time use. Each interface has different color for your easy installation. Suitable for electric bicycles.Specification:Material: Aluminium alloyRated Voltage: 24VUnder-Voltage Protection: 20±0.5VSpeed Regulator: 1-4 VMatch Motor: 250 - 350 W motorSuitable for: Electric bicycle, scooter, etcSize: Approx. 83 * 65 * 37 mm / 3.26 * 2.55 * 1.45 inchWeight: Approx. 120 gPackage List:1 * Brushed ControllerNoted:1. Please read the labels on the interfaces of the controller, make sure that every interface is rightly connected to what it matches.2. To the thick black&red power cord, the red is for battery positive electrode, and black for battery negative electrode. to the thick yellow&blue motor cord, the blue for positive electrode, the yellow for negative electrode. Make sure that power cord is placed rightly to prevent damage.