Smart homes don’t run on devices—they run on data. In this video I finally dug into the Aqara FP300, a small, battery-powered 5‑in‑1 sensor (mmWave presence, PIR motion, ambient light, temperature, and humidity) that I’ve been testing for over three months. If you’re in Apple Home, the big headline is Matter over Thread: scan the QR code, drop it into HomeKit, and start building automations that actually behave the way you expect—lights on with presence, off with absence, without needing a proprietary hub. I split the whole experience into “I’m new here,” “I’m on the fence,” and “I’m sold,” because I know the presence sensor market is noisy right now. I tested it in my office (easy mode), a reflective bathroom (interference test), and then the kitchen (real-world chaos). It was boring in the best way: fast triggers, stable presence while I sat still for hours, and about a 10‑second absence report after leaving—plus a very honest lesson about blind spots from upper cabinets. Where it really earned its keep is the bedroom and nursery, holding presence through the night—even with a small child—while I ran it strictly in Apple Home via Matter over Thread.