Bluetooth module, GPS module, RFID modules, proprietary RF modules,

 BMD-341 Series 3.6 V 2.5 GHz -96 dBm Stand-Alone Bluetooth 5 Low Energy Module

https://www.futureelectronics.com/p/semiconductors--wireless-rf--rf-modules-solutions--bluetooth/bmd-341-a-r-u-blox-8120679