SA-062 Tiny RTC (Real Time Clock) Module
Get ready to be able to see like the Predator! The SparkFun Grid-EYE Infrared Array Breakout board is an 8×8 thermopile array, meaning you have a square array of 64 pixels capable of independent temperature detection.
SparkFun Particle Sensor Breakout - MAX30105
The SparkFun MAX30105 Particle Sensor is a flexible, powerful sensor enabling sensing of distance, heart rate, particle detection and even the blinking of an eye.
SparkFun Single Lead Heart Rate Monitor - AD8232
SparkFun Single Lead Heart Rate Monitor is a cost-effective board used to measure the electrical activity of the heart.
SparkFun WiFi Shield - ESP8266
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 Shield
Text-to-Speech Module - Emic 2
The Emic-2 Text-to-Speech module makes it really easy to give voice to your embedded projects
Voice Recognition Module for Arduino
XBee 1mW Wire Antenna - Series 1 (802.15.4)
This is the very popular 2.4GHz XBee module from Digi
ZS-042 RTC (Real Time Clock) Module