Things like fridge and HVAC run in cycles. My fridge for example runs for about 45 minutes and then it goes off for 11 minutes. Fridges are not supposed to turn off (right?) and it’d be very useful if not essential to be notified if your fridge actually goes off, think a freezer full of meat off for hours… I know you can create notifications but it does not look right to see my fridge listed as off in my among other devices (it would be more correct to show something like “standby”).
So why not also detect cycles in addition to ON and OFF, and since Sense already knows for how long a device usually runs on average, you can correctly get an insight for when a device that’s suppose to be on turns off (taking in consideration its standby duration).