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Green rectangular relay board with multiple black relay cubes and pin headers

Traditions (Generic)

Traditions (Generic) Relay 1 2 4 8 Channel 5V Board Shield Computer Power Cord

SKU CH-FGBS-X48F9

A 5 V relay module board with optocoupler isolation offering one to eight channels and selectable high or low level triggering

  • Optocoupler isolation protects control circuits from high-voltage switching
  • Selectable high or low-level trigger suits diverse logic designs
  • Available in 1, 2, 4 or 8-channel versions for scalable projects
  • 5 V supply simplifies power with common microcontroller boards

Relay module with optocoupler isolation

This relay module provides one, two, four or eight independently switched channels on a single board. Each channel is driven at 5 V and uses an optocoupler to keep the control side electrically separate from the load side. The design suits hobbyists, students and engineers building low-voltage automation or IoT projects. It mounts directly on a microcontroller shield footprint for quick integration.

Choose the channel count that matches your load

The product is offered in four fixed channel configurations, so you must select the version that matches the number of circuits you need to switch. A single-channel board cannot be expanded to four channels later, and an eight-channel board adds unnecessary cost if only two loads are required. Verify the required channel quantity before ordering.

Highlights

  • Optocoupler isolation protects control circuits from high-voltage switching
  • Selectable high or low-level trigger suits diverse logic designs
  • Available in 1, 2, 4 or 8-channel versions for scalable projects
  • 5 V supply simplifies power with common microcontroller boards

Specifications

No published specifications for this item yet.

Questions about this item

What does the 5 V rating mean when the relay board is installed in a computer?

The board operates from a 5 V supply, so it can be powered directly from a USB header or the 5 V rail of an ATX power supply without an extra regulator.

How does the optocoupler affect the control signal levels?

The optocoupler isolates the control side, allowing the relay to be triggered by either a high-level (3.3–5 V) or low-level (0 V) signal from a microcontroller or PC GPIO.

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