Finally got my Aria X2 Transceiver. Did some testing using LightKey, Enttec USB Pro, Aria X2, and Jolt Panel FX2. Here are the results:
1. 2.4GHz works but only if Channel is set to 00. I played around with different channels on both Aria and Jolt Panels and anything other than both set to 00 wouldn't work.
2. Sub Gig US doesn't work, no matter what channel it is set to.
3. Sub Gig EU doesn't work.
4. Any channel other than 00 doesn't work.
5. Mesh doesn't work. If Mesh is set to on, Aria X2 stops transmitting.
6. There is currently no Bluetooth App to update radio and firmware data on the Aria X2.
7. Regardless of whether Jolt Panels are set to 2.4GHz or 900 MHz, they would receive the Aria 2.4GHz signal.
8. When troubleshooting, it appears that Aria broadcasts on all bands and all channels for 2 seconds upon power on (or at least it broadcasts on 2.4GHz Channel 00 for 2 seconds on power up even if it is set to do otherwise.)
9. On several occasions, Aria would stop transmitting after about 5 minutes. The only way to start again was turn turn the Aria off and back on.
10. The manual mentions stickers on the base of the antennas which label them either 2.4GHz or 900 MHz. Mine didn't have those, so there is no way to tell which antenna is which, and it didn't make a difference in testing which antenna was plugged into which antenna port or even if I unplugged both antennas entirely.