SONOFF MICRO USB switch review

I had the chance to test the sonoff micro (product given by itead), this device is an USB connected switch. You can control it from the Ewelink app and by the way power ON or OFF your USB devices. You can also program the start or the stop.

It can answer several use cases:

Restart your raspberry pi <4 if you are not at your home from a third party application
Restart your ESP or Arduino
Cut your smartphone power when it is charged
Switch on or off devices powered by USB (mini lamp, mini fans...)

The device is tiny but nevertheless be carefull it will not fit on all USB port environments.

The button enable to power it on or off without smartphone and to put into pairing mode.

The interesting stuff comes here, the device is rated for 5V 2.5A, it doesn't support Quick charge or power supply >5V.

We see that the device support 2.4Ghz wifi as the other sonoff devices.

If we check the current consumption without device we can see that it is less than 0.1A.

If the Sonoff is disconnected from its power supply and reconnected, unfortunately it doesn't retrieve its ON/OFF previous state. Sonoff is planning to add this function in the future.

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