Greetings!
I am seeking your hardware expertise.
I would like to be able to tell Gladys, who manages my central heating, to change behavior when the pellet stove is on.
Obviously, the latter is not connected.
So I thought that by adding a connected socket with power measurement, I could make Gladys understand that the stove is on or off but… What to choose?
I only have Wi-Fi for now, no ZigBee but I’m open to it.
This: Tuya TS011F_plug_3 control via MQTT | Zigbee2MQTT?
And is one dongle sufficient? Which one?
Hello. Very good idea 
I have one that works very well in Zigbee and allows you to have the power consumed
One dongle is enough. There have already been several discussions on the forum to help you choose (those based on the CC2652/CC1352 chipsets) and I recommend this page Supported Adapters | Zigbee2MQTT