This new device was detected a few days ago. Sense had already detected my AC a few days prior.
This device turns on about a minute before the AC stops blowing, and then turns off (EDIT:) about a minute after the AC stops blowing. I’m not very familiar with the inner workings of HVAC systems, so this could be something obvious I’m missing.
My system is a central AC, with (hopefully I’m getting these terms right) an outdoor compressor/cooling unit and an indoor furnace/air handler.