400W Permanent Magnet DC Motor Speed Controller, Electric Speed Regulator with AC 110V Input and DC 0 - 90V Output, Knob-Adjustable Speed

Precise Speed Tuning: Achieve accurate speed adjustment across a wide range for diverse need | Robust Build: Constructed with quality electronic circuits and integrated components, ensuring maximum strength and long-lasting durability | Stepless & Stable: Designed for single-phase asynchronous DC motors, it offers stable speed response, stepless adjustment, and suits 20-400 W motors under 1800 rpm | Dual-Protection Assurance: Equipped with over-current and short-circuit protection for safety | Versatile Industrial Applicability: Widely used in packaging, printing, electronics, and more for speed regulation