This is an attractive looking Zigbee button for $10 (link below) and there was enough discussion of Aqara devices on this forum that I took the plunge and ordered three.
The challenge is that I can’t get any of them to pair. The common wisdom in other threads (unless I’m misunderstanding) is to put Smarthings in pairing mode and then press the smaller button on the device’s edge for five seconds until it blinks, and then repeat this process into ST finds it.
When I press and hold that small button, the LED does indeed start flashing after a few seconds. It continues flashing as long as I hold it down. It stops flashing pretty much instantly when I release it. I can’t seem to find any duration or pattern of holding that button that results in ST finding my button.