KP115 - Unsafe & Hazardous
I have been using nearly 15 TP-Link Kasa KP115 home plugs specifically for the energy monitoring facilities it offers to Home Assistant.
In the past six weeks I have had four devices fail on me and when I say fail they fall back into a permanent switching mode where the connected device is put into a permanent state of on/off switching every second. I would imagine permanently switching electronic devices on and off isn't exactly good for the health of the plugged int device, especially where batteries are involved.
For example I had one connected to a fridge and one morning I found the KP115 had failed over night at near 2am (Home Assistant records was able to find this) and had spent over five hours turning my fridge on and off.
A friend of mine also purchased a number of the same plugs and has seen the same issues where two of his devices have failed in the same fashion in recent weeks so I know this isn't just an isolated incident.
Depending on the devices connected to these plugs I would deem such a failure to be potentially hazardous as if it was to fail I would expect it to default to an off mode instead of a permanent switching mode.
As all KP115 devices were purchased in 2021 I would expect they are now no longer covered under any warranty replacement unless I'm told otherwise. If that is the case then I would offer a buyer beware notice against this product.