1-Channel 220V AC Optocoupler Isolation Detection Module

The 1-Channel 220V AC Optocoupler Isolation Detection Module is a highly reliable sensing board designed to detect the presence of 220V AC mains voltage and translate it into a safe, isolated digital signal. Perfect for industrial environments and DIY automation, it safely bridges high-voltage AC lines with low-voltage microcontrollers or PLCs without risking damage to your sensitive electronics.

Widely utilized in smart home monitoring, industrial PLC control systems, and mains power failure detection, this module is fully compatible with 24V PLC systems as well as standard 3.3V or 5V microcontrollers like Arduino, Raspberry Pi, and ESP32. The onboard optocoupler ensures complete galvanic isolation, while the dual screw terminals allow for secure, simple wiring into your custom circuit diagram.

Features:

• Galvanic Isolation: Uses a high-quality optocoupler to safely isolate high-voltage AC input from low-voltage logic output.
• Broad Compatibility: Output can interface directly with 3.3V, 5V (Arduino/ESP32), or 12V/24V (PLC) logic systems depending on the VCC supplied.
• Visual Indication: Features an onboard green LED to easily and immediately indicate the presence of AC voltage.
• Secure Connections: Equipped with robust screw terminals for both the 220V AC input and the low-voltage logic side.
• Compact Footprint: Easily integrates into tight control cabinets, relay boxes, or custom DIY enclosures.

Package Includes:

1 x 1-Channel 220V AC Optocoupler Isolation Detection Module