Thanks, I'm glad you like it! Let me know how it works for you. And if you need any help, feel free to reach out.

A zone is 2 or more devices. So 2 works just fine. Instead of a straight line, image two flashlights pointing at each other. The beam of the flashlight becomes the sensing area.

In the dashboard you can create zones which you put devices into. So you could flash a handful of devices and put them into a "living room" or "upstairs" zone.