But I’ve Aqara zigbee sensors in fridge and freezer, works great. Probably those are not-so-good Faraday cages, and it probably depends on the used model And a DS18B20 is a wired sensor, the Shelly Uni can be put on the outside of the fridge.
@steff :
I haven’t seen one post here. Can you show me the source?
Shelly’s have normal wifi range. If your wifi system covers your home, Shelly’s should work fine.
Yeah, I just posted this one in an other topic: