https://www.silabs.com/wireless/z-wave/800-series-modem-soc?sl-l2attributefilterkey=sl:packagesize&sl-l2attributefiltervalue=5x5&sl-l2columnname=Package%20Size%20(mm)
Z-Wave EFR32ZG23 Modem SoCs (System-on-Chip) - Silicon Labs
EFR32ZG23 (ZG23) Z-Wave 800 Modem SoCs (System-on-Chip) are designed for future smart home, hospitality and MDU IoT products where device security is key.
system on chipz wavemodemsocssilicon