The Wiegand module (Part No. 9155037) is one of the 2N IP intercom modules and is used for connecting an external Wiegand device (RFID card reader, fingerprint or other biometric data reader) and/or connecting the 2N IP intercom products  system to an external security exchange. All the inputs and outputs are galvanically isolated from the 2N® system with insulation strength of 500 V DC. Wiegand can be used together with the 2N IP intercoms or together with the 2N® Access Unit.


  • You don't need any license to be able to use Wiegand module.
  • This scenario is not possible with 2N Access Unit M, as it is not possible to connect any additional module to this unit.

Wiegand module overview

Figure 1: Wiegand interface description


ReaderW0 IN, W1 IN, GND1Isolated 2-wire WIEGAND IN
LED OUTIsolated open LED OUT switched against GND1 on WIEGAND IN side (up to 24 V / 50 mA)
Control Panel

+U IN+UIN (5 to 15 V DC) WIEGAND OUT power supply input
W0 OUT, W1 OUT, GND2Isolated 2-wire WIEGAND OUT
LED IN (negated)Isolated input for open LED IN, input activated by GND2
LED INIsolated input for open LED IN, input activated by +U
 G+U IN WIEGAND OUT active supply LED indicator
 TAMPERTamper switch (Part No. 9155038) input


There are basically two scenarios in which Wiegand module can be used:

Based on the scenario it is necessary to choose the right direction of the information flow. This can be done in the section Hardware -> Extenders -> Direction.

Figure 2: Wiegand parameters setup

Description of the parameters

Outgoing direction

In this scenario you are able to send the card ID from the 2N Access Unit towards the 3rd party access control system. The 3rd party system is controlling the access. Control panel interfaces are used for the connection in this scenario.

Once you are using Control panel Wiegand module interfaces, be aware that this side of the module has to be powered by the external power supply.

Incoming direction

In this scenario it is necessary to use the first section of the Wiegand module called Reader (see the Figure 1). In this mode, the ID of the card is send towards the Wiegand module and then into the 2N Access Unit itself. You are able to see the card ID in the section Status -> Access Log. The 2N Access Unit is controlling the access.

Figure 3: Access Log


If your reader is not powered by default, you can use external supply (12 V / 2 A DC) terminal of the 2N Access Unit. The wiring is shown in the figure 4 bellow.



Figure 4: Wiring


Wiegand module doesn't fit into the  2N Access Unit cover. There are many possibilities how you can place your Wiegand module:

  • If you are using flush mounting box (Part No. 9155014), you can place Wiegand module in there. There is free space in the box which can be used.
  • It is possible to use blind module (Part No. 9155039) into which the Wiegand can be placed. In this case you would need to use a 2-module frame.
  • It is possible to place a Wiegand module into some box behind of the 2N Access Unit or in some other place, however the length of the Verso bus cable has to be max. 5m.

This procedure can be applied to:

  • 2N Access Unit
  • 2N Access Unit 2.0