XIANQI [DC Brushed Motor Speed Controller]: This is a simple and easy-to-use DC brushed motor speed controller, DC motor speed controller is connected to DC power supply, Never connect directly to household 220V AC power supply [Premium Material]: Speed controller is made with high quality circuit board which ensures a longer service life; [Working Performance]: Designed with convenient screw terminals for quick wire connection; Working Voltage: DC 6-24V, Maximum continuous output current : 3A, Maximum output power: 80W [Adjustable Reversible Motor Driver Switch]: This motor speed controller would change direction of rotation that accomplishes reversing motor's direction [Convenient to Use]: Simply rotate the knob to change output so to change the revolving speed of brushed moto Specification: color: as show Applicable Motor: Brushed motor Input Voltage: DC 6V 12V 24V Maximum Current: 3A Size: Approx. 50*32*15mm/2*1.3*0.6inch Weight: Approx. 34g / 1.2oz Package List: 1 x PWM Motor Speed Controller