Shelly BLU Motion

The instant response is what sold me—there’s no lag between someone walking in and my phone buzzing. Battery’s held up for months without a single low warning, which is more than I can say for other sensors I’ve tried.

I was skeptical about battery life on these little sensors, but it’s been three months on the original CR2032 with zero drop in responsiveness. The instant alerts are genuinely instant—my phone buzzes the second someone walks into the hallway, and setup took under two minutes.

The alerts hit my phone before I even turned around in the hallway—that real-time response is no joke. Battery life’s held up strong for over a month now, and it’s just been sitting there doing its job without a single hiccup.