Feature Highlights: 1. Wide Compatibility – Works with AC 220/240V 50/60Hz motors, ideal for a variety of industrial equipment. 2. Precise Speed Control – Adjustable speed range: 90–1400 RPM (50Hz) and 90–1700 RPM (60Hz) for accurate operation. 3. Durable & Reliable – Built with high-quality electronic components and integrated circuits for long-lasting performance. 4. Compact & Easy to Use – Small size, simple wiring, and tool-free installation. Just set up in seconds. 5. Flexible Direction Control – Easily switch motor rotation direction by changing the jumper between CCW and CW terminals. Product Details: This 400W AC motor speed controller offers stable and precise speed regulation for packaging, printing, food processing, electronics, apparel production lines, and more. It features a wide speed range, high precision, and a durable ABS housing. The built-in fine-tuning potentiometer allows you to calibrate torque and speed as needed. Always start at the lowest speed setting ("0") to avoid sudden current surges. Suitable for continuous industrial use. Specifications: - Voltage: AC 220/240V 50/60Hz - Speed Range: 90–1400 RPM (50Hz) / 90–1700 RPM (60Hz) - Material: ABS - Color: Black - Package Includes: 1 × Motor Speed Controller Note: Slight color variations may occur due to lighting and screen differences. Measurements allow a tolerance of ±1–3 cm.