@Doug, aka Atchafalaya Man posted:Interesting question, Robert. My take is....
Bluetooth has a 30 foot range. A WIFI router has a 100-300 foot range. Thus, the thermostat would have a 30 or 100-300 foot range depending on the choice of mode, BT or WIFI.
When Harriet walked through her park, her phone was too far from the thermostat to utilize the 30 foot range of the Bluetooth. So, it had to rely on WIFI.
It seems to have either picked up the park's WIFI signal or went to a cellphone tower for her request.
Either the cellphone tower sent her command to the internet, which was received by her [modem? Park Cable? Starlink?] from which her ROUTER sent out a signal within the camper and her thermostat took her phone's signal request from the router and adjusted the thermostat.
Or, if it was a wireless WIFI signal the park was painting to all of the area, the signal got to the internet that way without going through a cellphone tower.
Regardless, the thermostat had to be listening to WIFI in the camper at the time through some source connecting it to the internet. Perhaps??
That's more understandable, than way I put it.
I've only had one host and couple campers, complain about my leaving AC running, while gone for day. Breaker was off once, when I returned, I wasn't impressed. I also had someone unplug boat charger. Of course nobody knew anything about either.