https://www.silabs.com/wireless/bluetooth/efr32bg22-series-2-socs/device.efr32bg22c224f512im40?tab=softwareandtools
EFR32BG22C224F512IM40 BG22 Bluetooth Mesh IC - Silicon Labs - Silicon Labs
EFR32BG22C224F512IM40 Series 2 BG22 Bluetooth Mesh IC provides a BLE RF link for reliable connectivity and leading energy efficiency for IoT applications.
bluetooth meshiclabs