| 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 315MHz, 433MHz, 868MHz, 915MHz 76.8kBaud 10dBm -107dBm 32kB Flash, 2kB SRAM SPI, UART 26 2.7 V ~ 3.6 V 11.9mA 26.6mA |