4 Channel 12V Relay Module with Optocoupler Isolation | 4-Relay Board 10A for Arduino, PLC, ESP32 & Automation

4 Channel 12V Relay Module with Optocoupler Isolation | 4-Relay Board 10A for Arduino, PLC, ESP32 & Automation

The 4 Channel 12V Relay Module with Optocoupler Isolation is a reliable switching board designed to control high-voltage and high-current devices using a 12V control signal. The module includes 4 independent relays, allowing multiple electrical loads to be controlled at the same time in automation and industrial applications.

Each channel uses optocoupler isolation, which separates the control circuit from the load circuit and protects sensitive electronics from voltage spikes and noise. This makes the module ideal for PLC systems, Arduino, ESP8266, ESP32, Raspberry Pi, CNC machines, and other microcontroller-based projects.

Click here to view related products

Features

• 4 channel relay module
• Operating voltage: 12V DC
• Optocoupler isolation protection
• 4 independent relay outputs
• Switching capacity: 250V AC / 30V DC @ 10A
• High / Low level trigger support
• LED status indicators
• Screw terminal connections
• Isolation groove for safety
• Compatible with Arduino / PLC / ESP / Raspberry Pi

Applications

• Arduino projects
• PLC automation systems
• Industrial control panels
• Motor and pump control
• Lighting automation
• Robotics projects
• Smart home systems
• DIY electronics projects