If you ordered these together, both the anti-static packaging and the boards should have been marked. If this is not the case and you are not able to determine, we will replace your product free.
In the past, we ran into this as well. A quick range test will very quickly differentiate between 433 and 915, however, 915 vs 868 will be more difficult.
To address this, we've added a silkscreen indication block on the MW-LoRa series, and this will be implemented in other series as well going forward.
This message was edited 1 time. Last update was at 03/01/2015 11:19:14