IoT components form the essential foundation for enabling connectivity and automation across smart devices. Core elements, such as GPS, LTE, and BLE modules along with gateways, make data transmission and location tracking possible, while BLE beacons support proximity-based engagement. Smart batteries manage power efficiently, extending device lifespan, and NFC tags offer secure, contact-free data sharing. Collectively, these components imbue IoT systems with intelligence and connectivity, fueling applications ranging from asset monitoring to the infrastructure of smart cities.