Another one of the outlets recently fail. The LED just fast blinks, and the device does nothing. I've now had 5 of these fail, of the 8 I bought. The one that failed was purchased just over 3 years ago.
Update:
I bought 5 at $10/ea in May 2020. 4 are now dead.
I bought 3 at $13/ea in Dec 2022. 1 has already failed.
Also, none of mine have any load plugged into them, and they are almost never turned on or off. I use them purely as Zigbee repeaters (mostly to keep Aqara/Miija devices happy).
They are cheap, but you get what you pay for.
In contrast, none of my Iris v2 Smart Outlets have ever failed. Some are over 7 years old.