Proprietary RF Module, transceiver radio waves, Bluetooth Accessories - tatanh1983/conchodom GitHub Wiki 1YM Series Dual Band WiFi 11a/b/g/n/ac and Bluetooth 5.2 Module https://www.futureelectronics.com/p/semiconductors--wireless-rf--rf-modules-solutions--bluetooth/lbee5xv1ym-574-murata-2164883