Smart Stackable Power Meter (4-Relay)

The stackable form factor is a lifesaver on my crowded shelf—snapped two together and they stay put without extra cables. Each relay responds to commands within a second, and the power readings match my standalone meter almost exactly.

The stackable form factor is exactly what I needed for my crowded shelf setup, and the four relays give me plenty of control without taking up extra space. Hooked it up in a few minutes, and the power readings feel solid and accurate so far.

Setup was a bit fiddly because the terminals are small, but once I connected it to my home assistant the relay toggling has been rock solid. The stackable design is a nice touch if you're planning to expand later.