Laird Connectivity Lyra 24 Series BLUETOOTH® Modules are Bluetooth Low Energy (BLE) modules based on Silicon Labs EFR32BG24 SoC. These modules offer Bluetooth low-energy connectivity, delivering exceptional RF performance and energy efficiency, future-proofing capabilities, and industry-leading Secure Vault® technology. The Lyra S4 Bluetooth modules come with a 32-bit Arm® Cortex®-M33 core with DSP instruction and a floating-point unit. These modules function at 2.4GHz radio frequency and feature 1536kB Flash and 256kB RAM. The Lyra 24 modules operate at a 1.8V to 3.8V supply voltage range and a -40°C to 105°C temperature range. Typical applications include smart home devices, lighting, gateways and digital assistants, and industrial IoT sensors.