| Type RF Family/Standard Protocol Modulation Frequency Data Rate (Max) Power - Output Sensitivity Memory Size Serial Interfaces GPIO Voltage - Supply Current - Receiving | TxRx Only 802.15.4 Zigbee® O-QPSK 2.4GHz 250kbps 5dBm -98dBm 768B RAM SPI 6 1.8 V ~ 3.8 V 18.5mA 33.6mA |