Electronic Voltage Regulator, highpower 220V Motor. Product Name: Thyristor Electronic Voltage Regulator (Button-Type). Input Voltage: AC 110V/220V. Output Voltage: AC 10-110V/10-220V (adjustable). Maximum Load: 8000W (suitable for 4000W-4500W resistive loads). Voltage Adjustment Range: Input 110V (10-110V); Input 220V (10-220V); no-load voltage is a virtual voltage. Product Features: Zero lag, zero delay; equipped with a peak voltage absorption circuit to effectively protect high-power thyristors against surges and peaks; RC absorption with multiple layers of protection.