RF transmitter, receiver module, RFID Transceiver, rf transmitter module

 MLX90109 Series 3.1 to 5.5 V 3 mA 125 kHz RFID Transceiver - SOIC-8

https://www.futureelectronics.com/p/semiconductors--wireless-rf--rf-modules-solutions--rfid/mlx90109edc-aaa-000-re-melexis-4229597