For RF Transceiver' mounting, it uses the Surface Mount method.It uses the Tape & Reel (TR) package in order to optimize the performance of this RF Transceiver module.
WT11U-A-AI56IAP Features
Surface Mount Tape & Reel (TR) package
WT11U-A-AI56IAP Applications
There are a lot of Silicon Labs WT11U-A-AI56IAP RF Transceiver Modules applications.