Is the radio transceiver integrated inside the SAMR30 System on Chip by Microchip. It operates at 700/868/915MHz frequencies. Its main characteristics are:
IEEE 802.15.4 hardware support and Compliant with IEEE 802.15.4-2003/2006/2011
+11dBm power max and sensitivity down to -110 dBm (BPSK-20)
CSMA-CA and Listen Before Talk