A single-channel 3 V relay module from the ElecFreaks OCTOPUS series, designed for use with the BBC micro:bit. It uses a high-quality HUIKE relay capable of switching loads up to 30 A, making it suitable for controlling home appliances and other high-current devices.

The module runs on 3 V power, which the micro:bit can supply directly. It connects via a standard OCTOPUS electric brick connector and includes both normally open (NO) and normally closed (NC) contacts.

Key Features

• Channels – 1
• Operating Voltage – 3 V (micro:bit compatible)
• Max Switching Current – 30 A
• Contact Type – Normally open (NO) and normally closed (NC)
• Connector – OCTOPUS electric brick connector
• Series – ElecFreaks OCTOPUS

Getting Started

1. Connect the relay module to P1 on an octopus:bit breakout board using a jumper cable
2. Insert the micro:bit into the edge slot of the octopus:bit
3. Set P1 to high to close the normally open contact (and open the normally closed contact)

Ideal For

• BBC micro:bit projects requiring relay switching
• Controlling lights, motors, and other high-current loads
• Educational electronics and home automation experiments

Package Contents

• 1× Single-channel 3 V relay module

Resources

• MakeCode Example Program