Input supply voltage: 6V-28VDCItem size: 13*2*04 inches; Net Weight:085 ouncesDuty Cycle adjustable: 0%-100%,without switch.The maximum output : 80WThe maximum continuous output current :3AColour: BlackMaterial: metal + pcOperating instruction:Before you attempting to wire the controller, make is off.WARNING: DO NOT REVERSE POSTIVE AND NEGATIVE LOADSTHIS WILL DAMAGE THE CONTROLLER.TO CHANGE MOTOR DIRECTION, INTERCHANGE THE POSITIVE AND NEGATIVE WIRES OF MOTOR.1. Connect wires refer to the "wiring diagram" .2. Turn on the , and adjust the potentiometer.3. The LED indicates the up and the speed of motor.Package Including:1 x DC Motor Speed ControllerOnly the above package content, other products are not included.Note: Light 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.