Silicon Labs Expands Sub-GHz IoT Leadership with Launch of Cost-Optimized FG23L Wireless SoC

Austin, Texas – September 10, 2025 (PRNewswire) – Silicon Labs (NASDAQ: SLAB), a global leader in low-power wireless solutions, today announced the upcoming availability of the FG23L wireless SoC, the newest addition to its Series 2 portfolio. The developer kit is available now, with full market availability starting September 30. Designed to deliver secure, long-range connectivity at an ultra-low cost, FG23L further strengthens Silicon Labs’ leadership in Sub-GHz IoT technology by making scalable, high-performance IoT deployments more accessible than ever.

Ross Sabolcik, Senior Vice President of IoT Products at Silicon Labs, commented: “FG23L extends our proven Sub-GHz leadership into high-volume, cost-sensitive markets. By combining industry-best coverage, efficiency, and security at an unmatched value, we empower customers to bring more connected devices to market faster and more affordably than ever before.”

Addressing the Growing Demand for Cost-Optimized, Long-Range IoT
As industries increasingly require long-range and cost-efficient wireless solutions for smart cities, building automation, and industrial systems, FG23L was purpose-built to meet these demands. Unlike many competing products that force trade-offs between coverage, security, or power efficiency, FG23L excels across all three dimensions.

Featuring an industry-leading ~146 dB link budget, FG23L delivers up to twice the coverage of similar devices. Its +20 dBm transmit power, high receive sensitivity, and ultra-low energy consumption support reliable connectivity and battery lifetimes exceeding 10 years—critical for large-scale IoT networks where device longevity and total cost of ownership are key.

Unmatched Value for Secure, Scalable IoT
Built on a 78 MHz Cortex-M33 core with a dual-core wireless architecture and integrated Secure Vault™ mid-level security, FG23L offers robust computing performance, advanced connectivity, and strong protection against evolving security threats. Developers also benefit from a rich peripheral set, 23 GPIOs, and simplified development tools such as Simplicity Studio 5 and Radio Configurator, streamlining the design process and reducing Sub-GHz implementation complexity worldwide.

The combination of performance, efficiency, and affordability enables manufacturers to scale IoT solutions more cost-effectively across diverse applications—including industrial sensors, building automation, smart city infrastructure, agricultural IoT, and electronic shelf labels (ESL).

For developers seeking more memory, advanced features, or lower power profiles, Silicon Labs offers seamless migration from FG23L to FG23 and other Sub-GHz devices within its portfolio.

Availability
The FG23L development kit is now available through Silicon Labs’ distribution partners and www.silabs.com
. The EFR32FG23L wireless SoC will be fully available starting September 30, 2025.

For more details on how FG23L reinforces Silicon Labs’ mission to deliver secure, intelligent wireless technology that helps innovators build a more connected world, visit the Silicon Labs blog: “Introducing the Ultra-Low-Power, IoT-Optimized FG23L Sub-GHz SoC.”