Just after some clarification really, I have some Xiaomi Aqara motion sensors and they work really well but if one of them triggers an intrusion in SHM and the intrusion is dismissed it wont trigger an intrusion again unless there is no motion for 2 minutes.
I have hacked the sensors so they can now report motion at 5 second intervals rather than the default 1 minute but this didn’t make any difference.
I also don’t have any ST motion sensors so I don’t know if it is the sensor or the way SHM works, I suspect its the latter as the live logging shows motion being detected.
Door sensors trigger intrusions whenever they are opened so why wouldn’t a motion sensor?