https://www.cnx-software.com/2025/09/12/silicon-labs-fg23l-low-cost-arm-cortex-m33-soc-targets-proprietary-sub-ghz-iot-applications/?amp=1
Silicon Labs EFR32FG23L, or FG23L for short, is an ultra-low power, Sub-GHz wireless Arm Cortex-M33 SoC, which the company claims offers the best
silicon labslow costarm cortexsoctargets
https://www.securityinfowatch.com/access-identity/access-control/press-release/10556612/johnson-controls-security-products-formerly-tyco-security-products-sur-gard-system-ii-receiver-for-proprietary-applications
Receiver provides remote IP monitoring of commercial fire and burglary systems
system iiproprietary applicationssecurity infosurgard