The RN-XV module by Roving Networks is a certified Wi-Fi solution especially designed for customer who want to migrate their existing 802.15.4 architecture to a standard TCP/IP based platform without having to redesign their existing hardware. In other words, if your project is set up for XBee and you want to move it to a standard WiFi network, you can drop this in the same socket without any other new hardware.
Based on common 802.15.4 XBee footprint
Ultra low power: 4uA sleep mode, 38mA active
Onboard TCP/IP stack includes DHCP, UDP, DNS, ARP, ICMP, HTTP client, FTP client and TCP
Firmware configurable transmit power: 0dBm to 12dBm
Hardware interfaces:TTL UART
Host data rate up to 464Kbps over UART
Supports Adhoc and infrastructure networking
8 general purpose digital I/O
3 analog sensor inputs
Real-time clock for time-stamping, auto-sleep, and auto-wakeup modes