1. Safe Operation: Utilizes original thyristor and fully isolated input/output optocouplers for safe operation under low power conditions. 2. For Control: PWM output via a single-chip microcomputer's IO port allows adjustment of the duty cycle to modify the 220V AC voltage for dimming, speed, and power adjustments. 3. Output Power: Supports controllable loads within the 220V 3A or 660W range. Output under a specific load ensures normal voltage regulation. 4. PWM Input: When PWM directly inputs a 0V low level, the output is 0V. When PWM directly inputs 5V, the output is 220V. 5. Application: Connect this control module to lights or appliances for dimming, speed, voltage, and temperature control. Specification: Item Type: PWM Control Module Product Model: YYAC-3S Single-Chip Microcomputer Voltage: 3.3V-5V available; Single-Chip Microcomputer Frequency: 1Hz-500Hz; Single-Chip Microcomputer Duty Cycle: 0-100% PWM: PWM input 0V low level directly, output is 0V; PWM input 5V directly, output is 220V. Load Voltage: 220VAC Output Power: Can control within 220V 3A, i.e., load within 660W (output needs to carry a certain load for normal voltage adjustment). Package List: 1 x PWM Control Module