🛡️ What Exactly Is Wiegand? Everything You Need to Know About the Interface, Wiring, and Access Control Use Cases

Wiegand is a common access-control data interface. It transmits card IDs over two lines (Data0/Data1) in formats such as 26-bit/34-bit. Wiring is simple and distances can be extended, but no encryption is provided. This article explains how it works, cable and voltage/distance limits, wiring examples, and converter selection—so you can integrate access systems securely.