IoT (Internet Of Things)is an integrated ecosystem which consists of many interlinked webenabled smart devices which use embedded systems like processors, sensors and communication hardware, to gather, receive as well as work on data they acquire from their environments [1]. IoT Hardware consists a broad range of devices which are used for routing, bridges, sensors etc. These IoT devices help in managingkey tasks and functions like activation of systems, security, action specifications, communication, and detection of supportspecific goals [2].Main Contribution of this work lies in understanding the importance of IOT and its different hardware devices like Rasberry Pi, Arduino, Spark Fun, Adafruit etc.However in this review paper we will see two of the important hardware tools which have been used in today’s products. viz. Ada Fruit and Spark Fun. This study helps to compare both the tools and know the importance of each tool.

Keywords : IoT, Ada Fruit, Spark Fun, tools, IoT Hardware.