Simple Load Switching for Arduino, ESP32, and Automation Builds

The Relay Grove is a practical relay module from Circuitrocks for students, makers, and repair-friendly builds. It fits well in projects that need switching external loads, while keeping setup straightforward for testing and prototype work.

Compared with generic parts, this product stands out through details such as relay module. That makes it a solid choice for Arduino, ESP32, Raspberry Pi, robotics, motion-control, and workshop projects where matching the right part from the start saves time.

Why you'll love it

• Simple load switching: adds useful value when choosing parts for a build
• Controller-friendly trigger input: adds useful value when choosing parts for a build
• Useful in automation projects: adds useful value when choosing parts for a build
• Easy to add to timed or sensor-based control: adds useful value when choosing parts for a build

What you can build

This product is a good fit for home automation, pumps, lights, fans, and controller-triggered switching tasks. It works especially well in student projects, quick repairs, and prototype builds where part availability, straightforward hookup, and predictable results matter.

Starter bundles

Most users pair this with Arduino, ESP32, or Raspberry Pi, along with jumper wires and a proper power source for the target load or sensor.

Recommended add-ons

Useful add-ons include terminal blocks, controller boards, and safe power wiring for your switched load. You can also compare it with DFRobot Relay Module V3.1 - Arduino-Compatible 5V Relay, Relay Shield for Arduino.

Comparison table

Technical specifications

Pinout & power notes

The low-voltage control side connects to your controller, while the load side uses COM, NO, and NC terminals. Keep the switched load wiring separate from the signal side.

What’s in the box

1 × Relay Grove

Frequently Asked Questions