The technology is facing enormous changes these days. All the objects and all issue can connect to the internet announce their location. To comprehend this vast science, Internet of Things (IoT), one needs to understand and get all the information about the sensors used in the IoT, collect the data (receive and transmit), and get all the information about the wireless sensors and network. All of the sensors used in this field, IoT, the RFID and NFC are the mostly used ones. The reason that IoT is in progress in this decade is its using and producing the complex sensors; hence re-ducing the production, service and utility cost. The IoT is applica-ble in almost all industries.