Verdict
Flexible and powerful, the Meross Thread Smart Presence Sensor MS605 can operate as three separate motion sensors (based on range), as well as a light sensor, while it uses PIR and mmWave together to improve detection. Well, in theory. In practice, it took quite a bit of configuration to make the sensor work reliably. When it did, the MS605 proved to be fast and accurate, and its widely compatible with third-party smart home systems using Matter over Thread. Provided you don’t mind fiddling with the settings to make it work, this is a good choice, but there are simpler options available.
