ROSSLARE SECURITY PRODUCTS | MD-D04B
MD-D04B 4-READER EXPANSION CARD, FOR AC-425-BU

Rosslare’s MD-D04B is a plug-in expansion module for Rosslare’s AC-425x-B
access control panels that provides a 4-reader interface, 4 supervised inputs
with end-of line (EOL) resistor protection, and 4 relay outputs (5 Amp Form-C
N.O./N.C.) to the panel. Installation of the module takes under one minute
with the tailored expansion port in the panels and auto-recognize by the
panel. Once it is installed and the panel is powered on, the expansion is
recognized by the AxTraxNG Server, and the MD-D04B can be programmed for
access control and automation. Advanced communication with the controller
allows for firmware update and real-time event logging, with support for full
offline operation by the host panel.

MAIN FEATURES
 Additional four proximity readers or keypads
 Four relay outputs and four supervised inputs
to the access control panel
 Wiegand or Clock-and-Data transmission
keypad or biometric reader compatibility
 LED status feedback for 12 V power and relay
activation
 Cost effective and modular installation
 Compatible with Rosslare’s AC-425 networked
controller
 Input and output configurability using
Rosslare’s AxTraxNG software

GENERAL DESCRIPTION
Rosslare’s MD-D04B 4-reader expansion module is
designed with a focus on high quality and
reliability and is ideal for residential and
commercial applications.
Easy to install and operate, the MD-D04B
expansion board features state-of-the-art
supervised communications with the controller.
The expansion board adds four reader ports, four
additional readers or keypad inputs, four relay
outputs, and four supervised inputs to the access
control panel.
As a result, an AC-425x-B access control panel
with the MD-D04B expansion board can support a
total of eight readers and eight doors. In addition,
it is possible to add any keypad or biometric reader
that supports Wiegand, Clock-and-Data or any
other format supported by Rosslare's AxTraxNG
Software transmission formats.
The host access controller has complete control
over the additional readers, inputs, and outputs of
the MD-D04B expansion board.