Item description from the seller:<br>AC 110V 220V to DC 10-220V SCR Motor Speed Controller Voltage Regulator Dimmer<br>Note: The load must be connected first, then the voltage and speed must be adjusted. Used for DC 10v-220V<br>brushed permanent magnet motors and other DC equipment, Cannot be used for low voltage DC brushed motors<br>and equipment, otherwise it will cause the equipment to burn out<br>Parameter:<br>Model: CCMAC-DC220<br>Size: 85mm*58mm*38mm / 3.35" * 2.28" * 1.50"<br>Input voltage: 100-220V AC<br>Output voltage range : 10-220V DC<br>Working amps: 10A<br>Package includes:<br>1 * AC to DC motor speed controller<br>Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store