How to configure Wiegand card reader with R20 or R27 or R29

Wiegand is a wire communication interface between a reader (i.e. a card-, a fingerprint- or other data capture devices) and a controller. It is widely used in access control systems.

Using this feature to integrate with some wiegand access control. Doorphone can be used as wiegand input or output.

Website Configuration

Go to Intercom - Advanced to configure.

Wiegand Type: Support Wiegand 26 or 34. The different number means different bits.

  • 26 Bit Wiegand (being the most common). It consists of 24 code bits and 2 parity bits.
  • 34 Bit Wiegand which consists of 32 code bits and 2 parity bits.

Wiegand Mode: Input or Output. Typically, when users select input, we generally connect the wiegand input device, such as the wiegand card reader. Or doorphone can be used as output, it is generally used to connect the third-party access control, then it change the card information as wiegand signal, then transfer to the access control module.

Diagram Plan

Take the R29S for an example.