A device IoT will have wireless broadcast Division to be able to send and receive contact information. Wireless protocol IoT is designed to perform some basic services: operates on low power, low bandwidth use and work on a network. Some things are done on the 2.4 GHz band or Wi-Fi and Bluetooth, and the extra frequency GHz. The extra frequency 868 and 915 MHz including GHz, may have the advantage of less interference.
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