| 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 - 4GFSK, GFSK, OOK 142MHz ~ 1.05GHz 1Mbps 13dBm -126dBm 64kB Flash 4kB RAM I²C, SPI, UART 11 1.8 V ~ 3.6 V 13mA 18mA |