SainSmart WiFi Shield For Arduino Mega Uno Duemilanove(802.11 b/g/n) UART TTL Communicate Bring WiFi connectivity via Serial Host Interface, compatiable with Arduino Quick Booting Time : under 20msec Ultra Low Power through Dynamic Power Management (34A at the Standby mode) Operates with standard 802.11b/g/n access point at speed up to 11Mbps (802.11b) Security Protocol : WEP, WPA/WPA2-PSK, Enterprise, EAP-FAST, EAP-TLS, EAP-TTLS, PEAP