WIZnet W5500 Ehternet Shield
USB To RS232 TTL PL2303HX Auto Converter Module Adapter for Arduino
IO Expansion Shield for Arduino
315Mhz RF Shield For Arduino
Xbee Shield for Arduino
WhatsNext Red - Arduino Uno Wifi compatible
WiFi Shield for Arduino Tinysine WIFI shield based on Roving Networks RN-XV module.
Data Logger Shield for Arduino
Adafruit Feather 32u4 RFM95 LoRa Radio- 868 or 915 MHz - RadioFruitThis is the Adafruit Feather 32u4 LoRa Radio (RFM9x). We call these RadioFruits, our take on an microcontroller with a "Long Range (LoRa)" packet radio transceiver with built in USB and battery charging.
Adafruit LoRa Radio FeatherWing - RFM95W 900 MHz - RadioFruit Add short-hop wireless to your Feather with these RadioFruit Featherwings.