What Is the Average Battery Life of an RFID Card Used for Building Access?

By RFID Journal

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Ask The ExpertsWhat Is the Average Battery Life of an RFID Card Used for Building Access?
RFID Journal Staff asked 9 years ago

For example, in cards used by occupants of a condominium…?

—Pat

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Pat,

There is no battery in the cards used to enter a building. The reader emits radio waves, which the transponder in the card captures and uses to reflect back a signal. This is what is known as a passive RFID tag or transponder.

—Mark Roberti, Founder and Editor, RFID Journal

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