| Type RF Family/Standard Protocol Modulation Frequency Data Rate (Max) Power - Output Sensitivity Memory Size Serial Interfaces GPIO Voltage - Supply Current - Receiving | TxRx + MCU General ISM/SRD < 1GHz - FSK, GFSK, OOK 240MHz ~ 960MHz 256kbps 13dBm -121dBm 64kB Flash, 4.35kB RAM I²C, SPI, UART 19 1.8 V ~ 3.6 V 18.5mA 85mA |