Double Pack 4 Channel 5V Relay Module With Optocoupler High Or Low Level Trigger Isolated Expansion Board 10A Relays Compatible With Raspberry Pi And Arduino For Home Automation And DIY Projects
✔️ 4 isolated 5V relays, opto-coupled inputs, high/low trigger
This double-pack 4-channel relay module provides isolated switching for projects using Arduino, Raspberry Pi, or similar microcontrollers. It’s ideal for home automation and DIY tasks where mains devices need safe, individual control.
✅ 4-channel isolated 5V relay module with opto-isolated inputs
✅ Max load per channel: AC250V 10A, DC30V 10A
✅ Trigger current for opto-isolator: 5mA
✅ Jumper-selectable high or low level trigger for flexible logic
💡 What is a common use case for a 4-channel relay module with optocouplers?
This handy board helps you control mains devices from a microcontroller while keeping your control side safe thanks to isolation.
- Control lights, fans, pumps, or motors from an Arduino or Raspberry Pi without worrying about back-EMF
- Use opto-isolation to protect your microcontroller from voltage spikes and noise
- Jumper-selectable trigger lets you adapt to different signal levels and logic families
- Works well in home automation and DIY automation projects