Oh eventually it will rise above 30!
The applets are enabled only in the winter. A garage heater is on the switch. The way things are around here, if the temperature heads down at night it will keep going for at least another 10 degrees. If not tonight, next night for sure. In the meantime the garage will be warm.
I used this scheme last winter, and I think the year before too. It’s not perfect but its fail-safe operation keeps pipes from freezing!
I don’t know an alternate way to accomplish this feat. I’ll bet you do!
Does Rule Engine have triggers equivalent to “falls below” and “rises above”?