Sercomm XHS2-SE

Has anyone successfully gotten one of these to pair with ZHA or Zigbee2MQTT? I thought I was ordering a Visonic MCT-350, but instead they shipped me the XHS2-SE (although they look identical). I see that they are both listed on the Zigbee2MQTT device page but I can’t get it to pair with either protocol. I’ve factory reset the device numerous times and even tried to pair within a few inches of the adapters. What am I doing wrong?!

I got them to paid with ZHA but they wouldn’t update for some reason. I’ve switched to Zigbee2MQTT and they seem to be working well… Though I’d prefer to use ZHA…