Shelly EM + 120A Clamp

Setup was easier than I expected—the clamp snapped right around my main line and the app showed live wattage within a couple minutes. The 120A rating gives me plenty of headroom for our whole panel, and the data updates feel instant when I flip on the dryer.

Took about ten minutes to wire into my panel, and the 120A clamp reads are spot-on compared to my utility meter. The app updates fast enough that I can watch the dryer kick on in real time, which is oddly satisfying.

Installed it in my breaker panel and paired it with Home Assistant in under ten minutes. The 120A clamp reads my whole-house draw accurately enough that my utility bill matches almost to the digit each month.