The STEVAL-IDB009V1 evaluation platform is based on the BlueNRG-248 (QFN48), low power Bluetooth® system on chip with 256 KB Flash and 24 KB RAM. The BlueNRG-2 chip is compliant with the Bluetooth® low energy technology v5.0 specification, supporting master, slave and simultaneous master-and-slave roles, and the Bluetooth low energy extended data length feature. The STEVAL-IDB009V1 also provides a set of hardware resources for implementing a wide range of application scenarios: sensor data (accelerometer, pressure and temperature sensor), remote control (buttons and LEDs) and debug message management through USB virtual COM. Three power options are available (USB only, battery only, and external power supply plus USB) for high application development and testing flexibility.