Features Imported Thyristor: The module features an imported thyristor with a high withstand voltage of 1200V, and high-quality CBB capacitors with a 630V DC withstand voltage, ensuring durability and reliability. Extension Cord Inclusion: The controller board potentiometer is equipped with an extension cord, providing flexibility and convenience during assembly in the machine. Peak Voltage Absorption defend: The voltage regulator incorporates a peak voltage absorption circuit to effectively safeguard the high-power thyristor, ensuring long-lasting durability. Accuracy Trimming Capability: This voltage regulator allows for precise adjustment of the minimum output voltage through an accuracy trimming potentiometer, ensuring precise control. Versatile Functionality: When connected to suitable load equipment, the regulator enables brightness adjustment, speed adjustment, pressure adjustment, and temperature adjustment, enhancing its versatility. Specification: Item Type: High Power Voltage Regulator Module Material: PCB Purpose: Speed Control Module Voltage Input: AC 220 V Voltage Output: AC 50-220 V Maximum Power: 2000W Maximum Current: 25A Working Temperature: -40℃~125℃ Package List: 1 x Speed Control Module 1 x Rotary Switch 1 x Wire Row Note: The input of this module is 220 V AC voltage, be careful of electric shock when debugging. Package List 1 x Speed Control Module 1 x Rotary Switch 1 x Wire Row