Four Pack 5V 1 Channel Relay Module Shield With Optocoupler, High And Low Level Trigger, Plug And Play DIY Friendly For Microcontrollers And Home Automation, 10A AC 250V And 10A DC 30V Load, Opto Isolated Board

Four Pack 5V Relay Module Shield with Optocoupler
✔️ Four pack 1-channel relay module with optocoupler isolation, 10A load

Four pack 5V 1-channel relay module with optocoupler isolation, ideal for microcontrollers and home automation. This handy shield lets you switch AC or DC loads safely from Arduino, ESP32, or Raspberry Pi projects, with isolation to protect your control logic.

✅ Maximum load: AC 250V/10A, DC 30V/10A
✅ SMD optocoupler isolation provides strong driving and stable performance; trigger current 5mA
✅ 5V operation; high or low level trigger selectable by jumper
✅ Fault-tolerant design; control line failure won't trigger the relay; green power indicator and red relay state indicator
✅ Interface-friendly wiring with terminal connections; dimensions 50mm x 26mm x 18.5mm; four 3.1mm mounting holes with 44.5mm x 20.5mm spacing

💡 What is a 5V relay module with optocoupler isolation used for in microcontroller projects?

Handy overview for hobbyists and builders:

- Useful for turning devices on/off from 5V microcontrollers with isolated control - Provides electrical isolation between control and switched circuits - Works with Arduino, ESP32, Raspberry Pi, and similar boards; supports up to 10A