The WIZFI220-EX WiFi module is a ceiling-mounted device manufactured by Wiznet for home and commercial applications. It offers IEEE 802.11b standards-compliant wireless networking and supports speeds up to 11 Mbps. This module supports communication protocols such as A/D, I2C, PWM, SPI, and UART. It also offers onboard processor, memory, flash memory, and timer/counter/filter (TCF) capabilities. This device also provides advanced security features, including WPA/WPA2 Personal and Enterprise, data encryption and Wi-Fi Protected Setup (WPS). The WIZFI220-EX is a powerful yet cost-effective solution for wireless network applications.