1 Channel 12V Relay Module with Optocoupler Isolation

1 Channel 12V Relay Module with Optocoupler Isolation

The 1 Channel 12V Relay Module with Optocoupler Isolation is a reliable switching board used to control high-voltage AC and DC appliances using a 12V control signal. The module includes optical isolation, which separates the control circuit from the load circuit and protects sensitive electronics from voltage spikes, noise, and interference.

This relay module supports switching up to 250V AC, making it suitable for motors, pumps, lights, fans, solenoids, heaters, and other electrical equipment. The onboard transistor driver and flyback protection help ensure stable operation when connected to Arduino, ESP8266, ESP32, Raspberry Pi, PLC, AVR, PIC, and other microcontrollers.

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Features

• 1 channel relay module
• Operating voltage: 12V DC
• Optocoupler isolation protection
• High / Low trigger support (model dependent)
• LED power and relay status indicator
• Screw terminal output (COM / NO / NC)
• Transistor driver circuit
• Isolation groove safety design
• Compatible with Arduino / ESP / PLC / Raspberry Pi

Applications

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