Funduino Ethernet Shield Funduino clone of the original Arduino Ethernet Shield
LoRa Radio Shield for Arduino - 868 MHz The SX1272 LoRa module main advantage is the reach increasing but also the cost saving respect other similar modules like XBee 868 or XBee 900.
Adafruit FONA 808 Shield - Mini Cellular GSM + GPS for Arduino Cellular + GPS tracking, all in one, for your Arduino? Oh yes!
ITEAD Arduino IR Shield With Micro SD Slot Xbee Interface For Home Development With this IR shield, you can intelligentize your home by making a DIY monitor for indoor temperature and humidity or a controller for IR home appliances such as air-condition and television.
Speech Synthesis Shield for ArduinoEver want your robot could speak up and report what's going on? Or have your plants say if it feels thirsty? The Speech Synthesis Shield for Arduino makes it an easy way to give voice to your robots and projects.
Bees ShieldHave you ever been in a situation where you need two communication methods for your project? How about when a serial port is occupied by another serial device, and you still need to setup wireless communication?
NFC / RFID Shield Based on the NXP PN532 chipset - which is the most popular NFC ship on the market, this Arduino shield is powerful and you can use it to do a lot of things such as read and write to tags and cards, communicate with phones, or act like a NFC tag.
RS232/485 Shield For Arduino It is both a RS232 shield and also a RS485 Shield for Arduino.