XIAO nRF54L15 Sense is a powerful yet compact development board built around Nordic's nRF54L15 SoC, featuring a 128 MHz Arm-M33 core with 1.5 MB NVM. This thumb-sized board excels in modern IoT applications with comprehensive wireless connectivity including BLE 6.0, Matter, Thread, Zigbee, and Sidewalk protocols. It also features a 4 Mbps mode for proprietary 2.4 GHz protocols. With ultra-low power consumption, it's ideal for battery-powered IoT devices. The board offers 14 GPIOs, a USB Type-C interface, and onboard battery charging capabilities. This version integrates a digital microphone and a 6-axis IMU for audio and motion sensing. Enhanced security features provide robust protection for IoT deployments. Developers can leverage the Nordic Connect SDK and PlatformIO with RTOS support for efficient development workflows. It's compatible with major ecosystems such as Sidewalk, Find My, and Find My Device through the Connect SDK. Comprehensive security features include secure boot, secure firmware updates, secure storage, TrustZone-enabled trusted execution environment, cryptographic acceleration with side-channel protection, and tamper detection. Ultra-low power efficiency: optimized for long-life battery-powered applications, leveraging the Nordic nRF54L15 SoC's industry-leading efficiency (0.6 A in System OFF mode) and an integrated battery charging circuit. Streamlined development experience: full support for Nordic Connect SDK and PlatformIO enables efficient embedded development workflows. (Note: IDE is not currently supported). Color: Black. Material: PCB. Package includes: 1 x XIAO nRF54L15 Sense development board. Only the items listed are included; other products are not included. Note: Light reflection and different displays may cause slight color variations between the item in the picture and the actual product. Measurement error allowance is +/- 1-3 cm.