Shelly 1PM Mini Gen3

The thing barely takes up any space in the breaker box, which was my main worry. It’s been tracking my water heater’s draw accurately for two weeks now, and the live wattage readout in the app updates fast enough to see the element kick on.

The Gen3’s smaller footprint let me squeeze it into a junction box where the old meter never fit, and the energy readings on the app update fast enough to feel live. Works flawlessly so far for tracking my heat pump’s draw.

Setup was quicker than I expected, and once I flipped the switch in the app, the live wattage readout felt almost too accurate to be real. The Gen3's smaller footprint meant I could tuck it behind a junction box where the old meter never would have fit. Three weeks in, zero glitches, and the energy