My mother and I have been using the EP10 smart outlets around my house for about 2.5 years.  They were purchased brand-new off Amazon.  

Last July (2025), one I used with a 750-watt space heater began turning off & on rapidly during the "off" part of its schedule; nothing I did would make it stop.  I figured it was a side-effect of using the heater, so I bought a new EP10.

A couple of months ago, a different one I was using with a bedside lamp tripped the circuit breaker, again while it was "off".  When I turned power back on, if the EP10 was plugged in, no more than 1-2 volts could reach any outlets further down the circuit from it. I obviously 'retired' it.

At 3am today (Dec. 7), another EP10 that was "off" tripped the circuit breaker.  When I checked, I found that the back of the smart outlet was slightly melted around one prong; the wall outlet was partly melted on the inside and had to be replaced.

This is really alarming.  What is going on?