M5Stack Mini 3A Relay Unit

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RELAY as it says is an M5Unit that implement a Relay functions. Relay can be used as an electrically operated switch, uses an electromagnet to mechanically operate a switch, where it is necessary to control a large power load circuit by a separate low-power signal such as digital signal output from a microprocessor.

The Relay support input voltage of up to 30V DC and 220V AC.

There are 3 pins named: ON, OFF, COM. You can program to make COM connect to ON or OFF, just by high and low out put of a digital GPIO.

Product Features

  • Single-BUS control
  • Up to 3A @ 30 V DC or 220 V AC
  • Software Development Platform: Arduino, UIFlow (Blockly, Python)
  • Two Lego-compatible holes


  • 1x RELAY Unit
  • 1x Grove Cable
  • 1x 3.96 soket


  • Remote control of high-power appliances, such as refrigerators, air conditioners, TVs, etc.


Resources Parameter
Net weight 12g
Gross weight 26g
Product Size 48*24*21mm
Package Size 60*57*17mm


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