I’ve been using this sensor since Dec 2024 and it’s been working rather well. I use the following entity to determine presence…
binary_sensor.meross_presence_sensor_1_sensor_presence_motion
The sensor is in a bedroom and used to turn the ceiling fan on and off based on temp and presence detected.
You can see how its state is constantly changing when you look at the history…
My only complaint is that, because it is on a different subnet than the HAOS instance, despite my network permitting comms between HAOS and my IoT network, it sometimes drops off and is unavailable but that’s a network problem and not a Meross problem.
All-in-all, I’m quite happy with the sensor especially when compared to the Aqara FP2.