How RFID function?

Information exchange between transponder and reader can happen with various methods.

Slow RFID systems can operate with a small range which can be measured like in few meters in a frequency range of 120 to 150 KHz. For example, it is used for object identification and data production determination.

Higher-speed microwave RFID systems operate at a long-range which is up to 200 m and in a frequency range of 3.1 to 10 GHz.

Source:- https://www.industry-of-things.de/

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