I have a Digitrax Zephyr (DCS50) which I do use in this exact manner, when I don’t have the larger test track set up (the home layout, in the train shed, is powered by a DCS100). But this full batch of installs, all for one person, was 14 decoders worth, so I already had the full test rig set up (which one can see in the video) - that takes over the living room.