Three Channel 5V Relay Module With Optocoupler Isolation for Arduino Projects, 3.3V 5V Logic Compatible, 63x42mm Compact Expansion Board, Low Trigger Current, Easy Plug and Play

Compact 3-Channel 5V Relay Module with Optocoupler Isolation
✔️ 63x42x20mm single-board, 3-channel, 5V logic, 5mA trigger

This compact expansion board lets you control external devices from microcontrollers like Arduino, offering optocoupler isolation to keep signals safe when switching AC or DC loads. It's ideal for home automation, robotics, and hobby projects where you need reliable relay control.

✅ Size: 63x42x20mm
✅ 3-channel relay with optocoupler isolation
✅ Trigger level 3V-7V; trigger current 5mA
✅ Control Voltage: AC 0-250V or DC 0-30V; Control Current: 0-7A
✅ Logic compatibility: 3.3V/5V

💡 What is a common use case for a 3-channel 5V relay module with optocoupler isolation in Arduino projects?

This handy module lets you safely switch higher-voltage loads from a low-voltage controller.

- Handy for turning lamps, motors, or other devices on/off from a microcontroller - Keeps your control circuit isolated from the high-power side for safety - Works with 3.3V and 5V logic, making it easy to prototype with popular boards - Low trigger current reduces driving requirements on your MCU