The AFW121TI-POS1 is a high-performance, low-power, 2.4GHz WiFi module manufactured by 99IOT. It features a 91dBm 15dBm Cortex-M4 PCB On Board Antenna, allowing it to direct and amplify the radio frequency (RF) transmission signals at a high gain when compared with conventional on board antennas. This leads to increased transmission signal strength and better reception. It also has low power consumption, which makes it ideal for mobile, battery operated and other embedded applications. It complies with RoHS regulations and is suitable for a wide range of applications such as industrial control, smart home, medical, vehicle-mounted and others.