I'm not well-versed in this field but had heard of the Sense, and was almost going to buy one, except I detest that it's closed off to everything but the cloud. Furthermore, I've heard the mains-only monitoring it uses, while trying to divine the power sinks by their signature, leaves much to be desired. This looks like just the thing for me.
You still have to plug in two wall wart style transformers (one is for reference voltage, the other is to power the box) into a real power outlet outside the box, and then get those wires inside the box. Or commit some electrical code sins and wire that inside the box too.
Many houses have a doorbell transformer mounted on their service panel with no plug; I can’t see how that’s a NEC violation (and therefore providing a path for a similarly engineered, code-compliant solution).
Yes, I have seen this, but it is unusual, and the doorbell transformer is still outputting AC, not DC, but at a lower voltage, and that output is not run inside the breakerbox.
