Wifi shield(Fi250) is a economic internet solution with Arduino. The Wi-Fi module(WizFi250) support IEEE 802.11b/g/n mode, maximum speed up to 65Mbit/s. Wifi shield (Fi250) combine on board antenna; it’s easy to build you project in a small box. The module reserve a UFL connector, you can use an extra antenna to improve the signal range. There is a key on the board, just push one time to change wifi shield as AP mode. The module have a computer interface software, you can control and upgrade the module via USB-UART convertor. The wifi shield contain a Micro SD card socket, it’s like a recorder when wifi shield working as TCP, UDP server.