This new AC 110V motor speed controller provides variable DC output from 0 to 90 volts, allowing you to adjust the speed of compatible DC motors. It uses a simple knob for continuous adjustment, making it suitable for applications like small lathes, fans, pumps, or other workshop machinery where speed control is needed. Free shipping is available for this item. Note that this controller is designed for specific DC motor types; always verify your motor's voltage and current requirements match this unit's specifications before purchase. Check the listing for full details on compatible models and installation guidelines. AC 110V Knob Motor Speed Controller DC 0-90V Variable Adjustable Speed New To. Condition: New. Listed at 23.99 USD. Workplace Safety Protective Gas Mask Electric Constant Flow Supplied Air Fed new. Outdoor Hammock Tent Tarp Shelter Rain Sun Shade Camping Portable Picnic Pad Mat. 3D Ghillie Suits Jacket Pants Head Cover Apparel Desert Camouflage Hunting Suits.