Card readers

Card readers - for NOX and Axiom


We stock a large selection of card readers for use on access control systems.


Here you can find a short description of the different technologies, as well as the different brands we sell.



Interface - Wiegand or OSDP v2



The Wiegand interface is de-facto the most widely used standard in the world.

All card readers with Wiegand can be used on NOX, but due to the "old age" (1979) have certain limitations. 

  • Requires separate wires for power, data, LEDs and buzzer
  • Data line cannot be protected
  • Data line only works one way. Data cannot be sent to the reader.
  • Does not support more modern needs - e.g. display on card readers




OSDP is on its way to becoming the new international standard.

All OSDP card readers sold by us (as well as many others, but these have not been tested) can be used on NOX.

OSDP has many advantages over Wiegand.

  • Simple connection. Only 4 wires needed (power and data)
  • Very long range as RS485 is used
  • 2-way monitored communication (Alarm if no communication with the reader)
  • Possibility of data line encryption
  • Can control multiple LEDs with up to 4 colors, as well as flashing functionality over protocol
  • Can control buzzer with fixed or flashing functionality over protocol
  • Supports the possibility of additional inputs and outputs over protocol
  • Supports option for backtamper over protocol
  • Supports modern needs - e.g. individual text on display readers, direct biometrics, interactivity etc.



Reading technology


13,56 MHz Smartcards - Mifare, Desfire and iClass


Modern Smartcards can be both read from and written on. This 2-way communication offers an incredible number of possibilities, and can greatly increase security, for example by both card and reader containing encrypted data, so that the card reader knows that the card is valid and the card knows that the card reader is valid.

Mifare Classic - The most widespread reading technology in Denmark.

Desfire and iClass - Extremely secure, as both contain complex encryption algorithms that encrypt data on the card and the actual communication between card and card reader.


125 KHz proximity cards - HID, AWID and EM


Classic proximity card brought close to the reader (2-5 cm), which opens up access.

It is possible to copy prox cards, even if it is difficult.
Therefore, it is advisable to combine access control with a PIN code, which significantly increases security.



UHF (Long distance)

UHF systems use radio waves to communicate at distances that far surpass conventional technologies.

Often used for gate opening.


Card reader manufacturers