Recommendation for Voltage/Wattage sensing WiFi/Z-wave smart plug?

Hardware
1

TL;DR: I need a smart plug that can report voltage or wattage. Preferably operational w/o internet connectivity (i.e. over LAN / mqtt, not reliant on Chinese Servers!).

I came home after a weekend away to find that one of my kids left the space heater on full blast in the basement. Whoops. Time to invest in a smart plug. Anyone have suggestions on something that can report voltage or amperage (and optionally turn it on or off remotely)?

Thanks!

2

There are so many other threads on this subject, just use the search function at the top of the page instead of starting yet another thread.

3

Sonoff S31 reflashed with Tasmota.

4

Have been looking at that. Thanks!

5

If you already have z-wave devices, then I recommend Aeotec devices. I’ve been impressed by their quality. They do take some tweaking to get the energy reporting working properly with Home Assistant, but once setup, they work well.

I have a whole-home energy monitor like this to sense overall energy usage:


And several of these power-sensing smart switches on select devices:
6

Be carefull with sonoff stuff, I used one rated 16 ampère. It fried at 10 ampère.
Firestarters those things.