I have the 2-pack KC300, as well as some EC70s. The "activity zones" apparently do not matter on any of these -- it still notifies me of all motion anywhere in the field of view. The activity zones feature is pointless if it doesn't work: I have one of mine pointed at my front driveway, and activity zones set to only record motion on the driveway or porch. However, literally every single passing car on the street is triggering notifications and clips. I have tried to remove and setup zones from scratch to no avail. I quickly tested it by setting a tiny activity zone near a corner, and it still triggered based on the entire screen. As such, I don't think the activity zones feature is working at all.