w5100

This is a shield for the CC3000 WiFi Module. The CC3000 from TI (Texas Instruments) is a self-contained wireless network processor that makes incorporating internet connectivity into your project simple. Instead of the more standard UART communication method, the CC3000 module utilizes an SPI interface allowing you, the user, to control the flow of data as you please.

Xbee V3.0

GPS

The Arduino Ethernet Shield 2 connects your Arduino to the internet in mere minutes.

without PoE version

The GPRS/GSM Shield provides you a way to use the GSM cell phone network to receive data from a remote location. The shield allows you to achieve this via any of the three methods:

• Short Message Service
• Audio
• GPRS Service

BT shield (salve) is a HC-06 serial port Bluetooth module breakout board for Arduino, you can directly use the BT shield (salve) with Arduino UART port for Bluetooth communication.

IComsat is a GSM/GPRS shield for Arduino and based on the SIM900 Quad-band GSM/GPRS module. It is controlled via AT commands (GSM 07.07 ,07.05 and SIMCOM enhanced AT Commands), and fully compatible with Arduino / Iteaduino and Mega.

BLE shield is to adapt Bluetooth Low Energy to serial port, which is specifically designed for Arduino motherboard and compatible boards, plug and play.

This version of Ethernet Shield is not only compatible with Mega 1280 and 2560, but also provides a Micro SD card slot for reading/writing.