Pyramid Wiegand Format

Everything you need to understand Pyramid Wiegand Format

Card format Overview

A proprietary 39-bit card format used in access control systems, featuring a unique structure composed of 17-bit site code and 20-bit card number, and 2 parity bits (even and odd), allowing for easy management and avoiding card number duplication for secure, contactless access.

Pyramid Wiegand Format format properties

Site Code

17 bits. The facility code range is 0 to 131,071.

Card Number

20 bits. A unique serial number (0-1,048,575) for each card within that facility code.

Even parity

Even Parity for Even parity over bits 1-18.

Odd parity

Odd Parity for Odd parity over bits 19-38.

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