Shelly Pro 1PM

Took me an afternoon to wire it into the DIN rail, but once it was up, the energy monitoring in the app updated almost instantly. I've got it controlling a water heater and the relay clicks over cleanly every time, no buzzing at all.

The power metering is spot on—I can finally see exactly what each circuit in my panel is pulling without guessing. Setup was straightforward and the DIN rail form factor fits perfectly in my breaker box.

Installing this on the DIN rail took under ten minutes, and the built-in power metering is spot-on for tracking my workshop’s energy use. The relay clicks are satisfyingly solid, and it’s been flawlessly stable for two weeks straight.