400W 220V Digital Speed Controller Black

This black digital speed controller has physical dimensions of 9 x 10 x 6 cm (3.54 x 3.94 x 2.36 inches) and is designed for AC 220V supply. It supports universal motors up to 400W output with fine-grained speed adjustment from 90 to 1400 rpm. The unit relies on MCU digital control architecture for low-drift, high-stability performance. A clear digital display presents live operational data and supports menu-driven configuration: users can tailor display update frequency and enable automatic scaling of displayed values (e.g., rpm converted to relative %). Control is possible either through the front-panel rotary knob — calibrated to span full speed range — or via optional external switch connection for hands-free or remote activation. Gradual acceleration and deceleration curves ensure smooth transitions, minimising vibration and mechanical stress. A dedicated blocking protection circuit interrupts power when motor rotation ceases unexpectedly, preventing coil overheating. The built-in cyclic operation mode supports timed repetition of run-stop cycles — beneficial for prototyping, educational labs, or small-batch production workflows.