SparkFun RFID Reader Breakout
SparkFun Single Lead Heart Rate Monitor is a cost-effective board used to measure the electrical activity of the heart.
The SparkFun ESP8266 WiFi Shield is an Arduino compatible shield for the ESP8266 WiFi SoC – a leading platform for Internet of Things (IoT) or WiFi-related projects
SparkFun XBee Explorer Dongle
This is the SparkFun XBee Explorer Dongle unit for the Digi XBee module line.
SparkFun XBee Shield
The Emic-2 Text-to-Speech module makes it really easy to give voice to your embedded projects
Whether you’re an agriculturalist, a professional meteorologist or a weather hobbyist, building your own weather station can be a really rewarding project.
XBee 1mW Wire Antenna - Series 1 (802.15.4)
This is the very popular 2.4GHz XBee module from Digi