The WH-NB73-BA is a 2.4GHz Wi-Fi Module with RoHS Compliance produced by USR (U.S. Robotics). It features a complete antenna circuit, power amplifier, and voltage converter, and is IEEE 802.11b/g/n compliant. The module is designed with an LGA package that is easy to install, and its low power consumption makes it suitable for battery powered systems. The module supports both infrastructures and ad-hoc network topologies, and receiver sensitivity is -83dBm@10% PER. Additionally, the module supports WEP, WPA/WPA2, and WPS with AES/TKIP/DES/3DESEncryption.