EasyLoader (beta)

Current Product Don't Have Test Firmware

Note: pls, use PC chrome/edge browser, if can't connect, refresh the webpage.

1. Click connect button

2. After connected successfully, pick a firmware

3. Click the burn button

4. After burning successfully, Unplug the device and restart.





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


EasyLoader is a concise and fast program writer, which has a built-in case program related to the product. It can be burned to the main control by simple steps to perform a series of function verification.

Download Windows Version Easyloader Download MacOS Version Easyloader

The relay coil is turned on and off, and the contact is used as a switch for circuit control.



RELAY Unit RELAY Controlling Pin5VGND


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Feature Introduction

By controlling the opening and closing of the relay to achieve the purpose of weak current control of strong electricity

  • set COM connect ON Control relay closure

  • set COM connect OFF Control relay disconnect



Program with UIFlow