| Type RF Family/Standard Protocol Modulation Frequency Data Rate (Max) Power - Output Sensitivity Memory Size Serial Interfaces GPIO Voltage - Supply Current - Receiving | TxRx Only General ISM/SRD < 1GHz - FSK 315MHz, 433MHz, 868MHz, 915MHz 76.8kBaud 10dBm -110dBm - UART - 2.1 V ~ 3.6 V 9.6mA 25.4mA |