| Type RF Family/Standard Protocol Modulation Frequency Data Rate (Max) Power - Output Sensitivity Memory Size Serial Interfaces GPIO Voltage - Supply Current - Receiving | TxRx + MCU WiFi 802.11b/g/n - 2.4GHz 3Mbps 18dBm -95.7dBm 256kB RAM I²C, SPI, UART 27 2.1 V ~ 3.6 V 59mA 229mA |