The evaluation boards are based on the SPIRIT1 RF module SPSGRF-xxx, a Low data rate, low power Sub 1GHz transceiver. The SPSGRF-915 module operates in the 915MHz and the SPSGRF-868 module operates in the 868MHz ISM band. They are FCC certified and IC certified. It is compatible with the ST Morpho and Arduino UNO R3 connector layout. The board interfaces with the STM32 microcontroller via SPI connections and GPIO pins. The user can change some of the GPIOs by mounting or removing the resistors.

Allow wireless expansion of STM32 Nucleo boards
Chip antenna
Compatible with STM32 Nucleo boards
Equipped with Arduino UNO R3 connectors
Multiple boards can cascade to increase the connection scale of a systems
Example firmware for point-to-point communication, compatible with STM32Cube firmware

Wireless Modules - STMicroelectronics