4-Channel 5V Relay Module With High And Low Level Trigger For Arduino Raspberry Pi PLC Home Automation Industrial Control And Robotics DIY Projects For Makers

4-Channel 5V Relay Module for Arduino Raspberry Pi
✔️ 4-channel 5V relay module with opto-isolation and high/low triggers

This four-channel 5V relay board lets you switch up to four devices from a microcontroller, PLC, or automation controller. It's a common pick for home automation, robotics, and industrial control projects where safe, reliable switching is needed.

✅ 4 relay channels to switch up to four devices
✅ 5V DC operating voltage for common controllers
✅ High and low level trigger support for flexible logic
✅ Optical isolation protects the control side from spikes
✅ Pre-soldered board with screw terminals and status LEDs for easy setup

💡 What is a handy 4-channel 5V relay module used for in control projects?

It's handy for safely switching multiple loads from a microcontroller while protecting your control logic with opto-isolation.

- driving lights, motors, pumps from Arduino or Raspberry Pi - high/low trigger compatibility for flexible wiring - screw-terminal wiring for quick, secure connections