220V AC Detection Module – Optocoupler Isolation

Key Features:

• AC Voltage Detection: Detects 220V AC presence and converts it to a TTL output signal
• Optocoupler Isolation: Provides safe electrical isolation for microcontroller and PLC systems
• Wide Power Supply Range: Operates on 3V – 5V for MCUs and 24V for PLCs
• Easy Integration:
  • Green 2P terminal (5.0mm): Connects to 220V AC input
  • 3P terminal: Outputs signal for microcontroller detection
• Compact Design: 73mm × 15mm, suitable for embedded applications

How It Works:

• When 220V AC is present, the output provides a TTL signal, allowing a microcontroller or PLC to detect voltage presence.
• For PLC integration, connect COM (24V) to power, OUT to PLC input, and GND to negative terminal.

Safety Warning:

Do NOT touch components inside the white box while powered, as they carry high voltage (220V AC). Ensure proper insulation and electrical safety during use.

Why Choose This Module?

Safe & Reliable – Optocoupler isolates high voltage from low voltage systems
Microcontroller & PLC Compatible – Works with 3V – 5V MCU and 24V PLC input
Compact & Easy to Use – Small footprint, simple wiring, and TTL output