The AFW121TI-IND1 is a 2.4GHz SMD WiFi module manufactured by 99IOT. It has a 91dBm 15dBm on board antenna and a Cortex-M4 PCB. It is compliant with ROHS, which is a metrological certification for the Restriction Of Hazardous Substances. It features a multi-protocol stack and a wide dynamic range, as well as an integrated ARM Cortex-M4 microcontroller for running IoT applications. It is also equipped with a rich set of communication peripherals (UART, SPI, I2C). It provides excellent wireless performance for short and long range applications with low power consumption. It is suitable for a variety of industrial, home automation, and medical applications.