125-KHz Proximity Technology

In operation, Pyramid Series™ readers generate an electromagnetic field tuned to 125 kHz, an internationally recognized radio frequency for low power data communications.

When a credential enters this field, the credential’s internal RFIC is activated. The RFIC then transmits its unique data back to the reader as an encoded modulated signal.

The encoding of this signal is comprised of a patented data algorithm that uses a byte parity error detection scheme, providing extremely fast, accurate, and secure transmissions of up to 64 bits of user-definable data.


1. Reader powers proximity card or tag.

2. Card transmits access data (facility code, ID number, etc.) to reader.

3. Reader transmits access data to access controller via an industry standard protocol.


To learn More:

[Access Control]

[Proximity Card]