SONOFF POW Ring 智慧電表 | POWCT

The split-core clamp makes setup ridiculously easy, I had it snapped around my main line in under five minutes without touching a single live wire. It’s reading my whole home’s draw accurately up to 100A, and the safety factor alone was worth the purchase.

The clamp design is honestly the best part, I just snapped it around the wire without shutting off power and got readings instantly. I’ve been tracking my AC usage all week, and the 100A limit is way more than enough for my setup. It’s made me way more aware of my energy bill.

Installed it on my main panel in about ten minutes since the split-core clamp just snaps around the wire without any stripping or disconnecting. It reads up to 100A, which covers everything I've thrown at it, and I can finally see exactly what the AC unit is pulling in real time.