Relay Bit - 4 Channel 3V Relay Board for micro:bit

SBCSKU: 103398
Sale price £20
incl. VAT
excl. VAT
Only 2 units left

Compatible with:

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The Relay Bit allows your BBC micro:bit to control low and medium current/voltage devices. It's a handy option for controlling devices that could not be directly controlled by micro:bit's Digital I/Os.

The standardised shield form factor enables a smooth connection with the micro:bit.

The board includes 4 relays for controlling up to 4 different devices, and includes helpful features such as LED indicators and a 90-degree micro:bit connector.

Note: micro:bit board not included.


  • 4x High-quality 3V relays for loads up to 2A/24VDC or 2A/120VAC
  • Control up to 4 devices
  • 90-degree micro:bit connector
  • LEDs for each relay status
  • Standardised shield shape and design
  • Make your home IoT enabled
  • Mounting holes provided

Board Features

Relay Bit Board Features


  • Channels: 3
  • Voltage: 3V
  • AC control voltage: 120V @ 2A
  • DC control voltage: 24V @ 2A
  • Dimensions: 7x4.3x1.2cm (approx)
  • Weight: 100g (approx)


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