Shipping overseas is convenient since the RF Board is packed in QFN.The Evaluation board type is Transceiver.Try searching with SX123 to find RF Board variants.
SX1231-31SKB915 Features
Packed in QFN Transceiver Type
SX1231-31SKB915 Applications
There are a lot of Semtech Corporation SX1231-31SKB915 RF Boards applications.