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Shield for relay
Control & monitor your world with automation:bit Add-On for the BBC micro:bit! It's tolerant of up to 24V, with analog and digital inputs, outputs, and a relay, so it's ideal for automating low-voltage systems in your home.
Just slot in your micro:bit, then code automation:bit with the block-based Microsoft MakeCode editor. Hook up buttons to the inputs, use the built-in buttons on micro:bit, or the light-sensing capability of the LED matrix to control devices connected to automation:bit. Or why not use a second micro:bit's radio function as a remote control?
WARNING! automation:bit should not be used with voltages greater than 24V and especially not with mains voltages!