Enhanced Performance: This 4000W motor speed controller optimizes the operation of electric tools by providing precise voltage adjustment. Variable Control: Adjust speed easily with a simple turn of the knob, supporting diverse applications including woodworking and metal grinding. Easy Installation: Compact design and clear instructions enable straightforward setup. Output Voltage: 0–220V adjustable (with output voltage display) Maximum Power Rating: 4000W (compatible with up to 2000W resistive load) Adjustable Voltage Range: 0–220V (adjustable under load conditions; step-down to 0V, step-up 10V from 9A) Rated Current: 10A Maximum Current: 18A (overload protection at 10A) Product appearance and printed text may vary slightly between batches; such variations do not affect functionality. Plug Type: EU Plug (suitable for countries using EU-standard sockets) Input Voltage: AC 220–250V Color: Black Material: ABS Package Contents: 1 × Motor Speed Controller Note: Color representation may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.