1/3/8-Channel 220V AC Optocoupler Isolation Module, High Voltage Detection Signal Board Fits for for PLC Input, Industrial Automation, AC Voltage Monitoring(3Road)

220V AC Optocoupler Isolation Module – 1/3/8 Channel Signal Detection Board for High Voltage MonitoringThis optocoupler module is designed for detecting 220V AC mains signals and providing electrical isolation between high-voltage equipment and low-voltage logic systems. It converts AC voltage presence into a safe TTL-level signal that can be read by PLC, Arduino, STM32, or other digital systems.Available Options:1-Channel: Compact design for single-point voltage detection3-Channel: Multi-input status detection with separate indicators8-Channel: High-density industrial applications, ideal for multi-circuit feedback systemsSpecifications:Input voltage: 220V AC (±10%)Output signal: Logic level (active-high or active-low depending on jumper or model)Isolation type: High-speed optocouplerIndicator: LED per channel for input statusOutput interface: 2.54mm pin header or screw terminalsApplications:Power grid phase status detectionPLC digital input isolationIndustrial equipment voltage presence feedbackSafety monitoring for high-voltage controlHome automation 220V signal sensingInstallation Tips:Connect 220V live wire (L) and neutral (N) to the input side. Output signal connects to the logic input of your control system. Ensure proper insulation and mounting during setup.

• Precise Compatibility: Supports 220V AC signal input for real-time status detection. Available in 1-channel, 3-channel, or 8-channel configurations. Compatible with for PLC, microcontrollers, and industrial IO systems.
• Functional Replacement: Safely detects AC 220V presence and converts to isolated low-voltage logic output. Ideal for monitoring power status, switch signals, and industrial control feedback.
• Durable Material: Features high-quality optocoupler chips, flame-retardant PCB, screw terminals, and clear indicator LEDs. Ensures safe operation in high-voltage environments.
• Stable Performance: Optical isolation protects logic side from voltage surges and noise. Output is TTL-compatible (active-low or active-high depending on model), with fast response time.
• Easy to Install: Standard screw terminals for 220V input and logic output. Clear labeling and compact form factor allow easy wiring in control cabinets or automation setups.