Human Presence sensors FP2 MTR-1 MSR-2

Very new to HA, and have been migrating devices from smartthings to HA the past few days.
I’ve gotten fp2 setup in the aqara app and havent gotten around to setting it up fully in HA yet, but it seems like it should work.
Looking online at other devices I see MTR-1 and MSR-2. Understandably less polished devices, but they seem neat. I just can’t tell the difference. It seems like they are both similar devices with different technology under the hood?

Anyone have exp with devices from Apollo Automation and HA?

https://tech.scargill.net/apollo-mtr-1-and-msr-2-sensors/
https://apolloautomation.com/