The Rosslare MD-D04B is a plug-in expansion module for Rosslare's AC-425x-B access control panels, featuring a 4-reader interface, 4 monitored inputs (EOL) with resistance protection and 4 relay outputs (5 Amp Form-C NO / NC). Installing the module takes a minute until the panels customized expansion port and the panel automatically recognizes it. After installation, AxTraxNG Server immediately recognizes the add-on. Advanced communication with the controller enables firmware updates and real-time event logging, supporting full offline operation of the host.

- Four more proxy readers or access control
- Four relay outputs and four supervised inputs to the access control panel
- Wiegand or Clock-and-Data transmission keyboard or biometric reader compatibility
- LED status feedback in case of 12 V power and relay activation
- Cost-effective and modular installation
- Compatible with Rosslare's AC-425 network controller
- Input and output configuration using Rosslare's AxTraxNG software

Specifications
- Input voltage: 12 V DC
- Input current: Standby: 30 mA, maximum: 190 mA
- Number of reading ports: 4
- Number of inputs: 4
- Number of outputs: 4 units
- Output relays: 5 N.O., N.C. and COM contact FormC relays
- Voltage of inputs: 5 V DC maximum voltage
- Input type: Selectable: Normally open, Normally closed, Under supervision of one resistor (three states, normally open or normally closed), Under supervision of two resistors (four states, normally open or normally closed)
- Size: 116mm x 76mm x 22mm
- Weight: 75 g
- Reader output voltage: 12 V DC
- Maximum reading current: 245 mA
- LED control output: Open collector, active low
- Tamper input: 5 V DC maximum voltage, anti-tamper optical sensor
- Supported formats: Various