The STEVAL-IKR002V1 development kit includes 2 RF daughterboards based on the SPIRIT1 low power, sub-GHz low data rate transceiver suitable for ISM bands and 2 motherboards based on the STM32L low power microcontroller to control the daughterboards.

2 SPIRIT1 low power, sub-GHz RF transceiver daughterboards tuned for the 169 MHz band
2 STM32L microcontroller-based motherboards
Associated SPIRIT1 software development kit with documentation, STM32L firmware and GUI
Debug connector
USB interface
Modulation schemes: 2-FSK, GFSK, MSK, GMSK, OOK, and ASK
Air data rate from 1 to 500 kbps
Very low power consumption (9 mA RX and 21 mA TX at +11 dBm)
Excellent performance of receiver sensitivity (up to -120 dBm)
Low duty cycle RX/TX operation mode
Automatic acknowledgment, retransmission, and timeout protocol engine
AES 128-bit encryption co-processor
SPI interface for microcontroller