Product Name: 5000W AC Voltage Regulator Dimensions: L84.8 x W70 x H40mm, excluding protruding knobs and joints Maximum Power: 5000W (resistive instantaneous load limit), continuous use should be reduced; recommended resistive load up to 2200W at room temperature (key parameter) Efficiency: Over 90% Adjustable Voltage: AC 0-220V (adjustable from high to low down to 0V; from low to high starts at approximately 20V) Always connect the load before adjusting the voltage Designed primarily for resistive loads such as heating elements and incandescent lamps; compatible with most single-phase AC motors, but performance not guaranteed For other load types, verify compatibility before use Operating Voltage: AC 220V PCB Material: High Temperature FR-4 Color: Silver Housing Material: Metal Package Contents: 1 x SCR Voltage Regulator (no additional items included) Note: Lighting conditions and display settings may cause slight color variations between the product image and actual item. Measurement tolerance: +/- 1-3cm