Proprietary RF Module, Uhf serial solutions, wireless digital io module

 PN512 Series 2.5 - 3.6 V 13.56MHz Read / Write Transmission Module - HVQFN-32

https://www.futureelectronics.com/p/semiconductors--wireless-rf--rf-modules-solutions--rfid/pn5120a0hn1-c2-118-nxp-3038428