The proper trigger would be “iaszone started detecting motion.”
But…
Do yourself a favor and use state triggers. Not really a big deal, functionally the same, but if/when you start editing yaml, the “device_id” in a device trigger is an unecessary headache.
I also purchased an Aqara motion sensor in the hope it would work with my SONOFF ZigBee 3.0 Dongle E, but it turns out it’s not really.
I can pair them, and it seems as if the motion sensor would communicate with HA, but eventually, no new motion events are registered. Leaving them paired for like a day resulted in finding the Aqara sensor to be reported by HA in an unknown state.