SONOFF SNZB-06P occupancy detector events?

I’m using a SONOFF SNZB-06P occupancy detector and have been checking events with the Developer Tools.
I listen to zha_event, but don’t see any activity - though it’s working as shown in the device information.
Anyone know why this should be, please?
Jim

Has zha_event been added successfully to the list of Active Listeners list on the right of the page?

I used to have it listed there too, but now it’s gone and I can’t seem to add it back for some strange reason.

If this is also what is happening to you, try listening to all events (*), maybe you’ll manage to spot the event you are looking for.