General description High-quality dimmer designed for AC 220V applications, capable of handling up to 9A and 4000W. It features a high-performance SCR as the internal chip, ensuring durability and efficiency. The thickened metal shell provides high temperature resistance, making it suitable for long-term use. The dimmer allows for stepless voltage adjustment via a rotary knob, offering zero hysteresis and delay with a fast response time. Additionally, it includes a universal multi-purpose socket and a current display for enhanced functionality. Technical specifications Input Voltage: AC 220V Maximum Current: 9A Maximum Power: 4000W (under ohmic loads) Power under inductive load: 1/3 of the ohmic load Minimum load for accurate voltage measurement: 20W Other information Effectively protects high-performance thyristors from overvoltage and voltage limits with multiple protection features. Output voltage measurement is virtual without a load; must be connected to a load of 20W or more for