Attributes . IC RF TxRx + MCU Bluetooth Bluetooth v5.2, Thread, Wireless M-Bus, Zigbee? 143MHz ~ 176MHz, 287MHz ~ 351MHz, 359MHz ~ 439MHz, 431MHz ~ 527MHz, 861MHz ~ 1.054GHz, 1.076GHz ~ 1.315GHz 48-VFQFN Exposed Pad . Names