Sonoff Micro USB Smart Adaptor is a no-frill device that allows you to control your USB device remotely. The device connects to your wi-fi network and can be added via the eWeLink app.
I have issues pairing this using my iPhone 12 Pro Max. However, when I use my Google Pixel 3a without any SIM card, the pairing works. Apparently, a lot of people have issues pairing the Sonoff Micro USB Smart Adaptor as indicated in the ITEAD Forums.
I am using this to voice control my master bedroom’s fairy light which is powered by USB.