Description AC 220V Motor Speed ​​Controller, Speed ​​Control Voltage Power Regulator, SCR PWM 0-100% Adjustable Frequency Duty Cycle Module AC 220V Motor Speed ​​Controller, Speed ​​Control Voltage Power Regulator, SCR PWM 0-100% Adjustable Frequency Duty Cycle Module AC 220V Motor Speed ​​Controller, Speed ​​Control Voltage Power Regulator, SCR PWM 0-100% Adjustable Frequency Duty Cycle Module Uses original thyristors, with complete input and output optocoupler isolation, and complete isolation for weak current, ensuring safe use. The duty cycle is adjusted via the 10-port PWM output of the MCU, changing the 220V AC voltage to achieve dimming speed control and power regulation. Specifications: Output Power: 220V 3A controllable, i.e., load power within 660W; the output voltage requires a certain load to adjust normally. Microcontroller Voltage, Frequency, and Duty Cycle: Voltage: 3.3V-5V universal Frequency: 1Hz-500Hz Duty Cycle: 0-100% PWM Direct Input: 0V low level; Output: 0V PWM Direct Input: 5V; Output: 220V Note: 1. Due to differences in lighting and screen, the product color may be slightly different from the picture. 2. Please allow an error of 1-3 cm due to manual measurement. Package List: 1 x PWMF Frequency Duty Cycle Module