Inventek Systems ISM43340-M4G-L44-10CF Multiprotocol Modules 802.11a/b/g/n serial-to-WiFi and BT 4.0 combo module with integrated TCP/IP stack. 2.4 and 5 GHz Chip Antenna. 2MB External Flash. Inventek AT Commands (IWIN) firmware and Cypress WICED compatible. Certified FCC/IC/CE