The X-STM32MP-IOT01A is an STM32 MPU expansion board with the SPSGRF-915 SPIRIT1 RF module for Sub-1 GHz RF communication with sensor, for IoT applications. The X-STM32MP-IOT01A interfaces with the STM32MP microcontroller via GPIO connector pins, using SPI, I²C, GPIO connections for the SPSGRF-915, iNEMO inertial module, keys, and LEDs. It is compatible with the STM32MP157F-DK2 and Raspberry Pi’s GPIO connector layout. The SPSGRF-915 module operates in the 915 MHz ISM band. It is FCC certified (FCC ID: S9NSPSGRF) and IC certified (IC 8976C-SPSGRF). It is based on the SPIRIT1 Sub-1GHz transceiver and the integrated balun (BALF-SPI-01D3). The LSM6DSOX iNEMO inertial module is a 3-axis digital accelerometer and a 3-axis digital gyroscope with a full-scale acceleration range of ±2/±4/±8/±16 g and an angular rate range of ±125/±250/±500/±1000/±2000 dps.