2 Pack PC817 4 Channel Optocoupler Isolation Module For Control Relays Plug And Play 3.6 To 30V Input And 3.3 To 30V Output With 24AWG Wire 10mA Max

Two-Pack PC817 4-Channel Optocoupler Relay Isolation Module
✔️ Input 3.6-30V, Output 3.3-30V, 10mA max per channel, 24AWG wire

This 2-pack PC817 4-channel optocoupler isolation board is designed to keep your low-voltage control logic safe while driving higher-voltage loads. It's ideal for hobby projects, PLC interfaces, and relay control boards where galvanic isolation protects your microcontroller from noise and spikes.

✅ Driving Terminal Port Signal Voltage: 3.3-24V
✅ Output Port Voltage: 3.3-30V
✅ Output Current: max 10mA per channel
✅ Through jumper lets you pick high or low output state
✅ Independent 4-channel per board enables multiple simultaneous controls
✅ Pack includes 2 boards and 1 x 24AWG wire

💡 What is a PC817 4-channel optocoupler isolation board used for in relay control and PLC interfaces? Here's a handy answer. - Provides galvanic isolation between low-voltage logic and high-voltage loads - Converts low-level MCU signals to drive relays or PLC inputs safely - Helps protect microcontrollers from voltage spikes and electrical noise