Free Shipping for eligible orders over $99

Zero Interest for 12 Months – Finance with Confidence Learn more

Same Day shipping until 5PM EST Learn more

Rosslare  |  SKU: RSL-MD-D04B

Rosslare - MD-D04B - Four Reader Expansion Module for AC425B Networked Access Control Panels

$35143 $45640
Shipping calculated at checkout.
Trust Guard Security ScannedSecure transaction

Found a better price? Call for Price Match!
Shop with confidence knowing you’re getting the best deal.

Delivery and Shipping

All orders are shipped between 24 hours or less Monday through Friday from 9:00 am to 6:00pm. Orders placed after 5 p.m. EST will be shipped next business day. 
Learn more

Return Policy

At Locksmith Keyless, we prioritize your satisfaction and offer a simple return process. Returns are accepted within 30 days of purchase for unused items in original packaging. Certain items, including OEM keys, Lishi tools, and customized orders, are non-returnable. A restocking fee of up to 30% may apply. For a full list of non-returnable items and more details, please refer to our complete return policy.

For damaged, missing, or incorrect items, please contact us within 48 hours of delivery. All returns require an RMA number. Shipping costs for returns are the responsibility of the customer.

View Full Return Policy

Description

Rosslare - MD-D04B - Four Reader Expansion Module for AC425B Networked Access Control Panels

The 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.

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.
Specifications:
Input Voltage 12 VDC from a host controller
Input Current Standby: 30 mA
Maximum: 135 mA
Number of Reader Ports 4
Number of Inputs 4
Output Relays 4 x 5 A with N.O., N.C. and COM contacts Form-C Relays
Inputs Voltage 5 VDC maximum voltage
LED Control Output Open collector, active low
Power LED Active when mounted correctly on the host controller (AC-425)
Output LEDs Four LEDs; Each output LED is active when an output relay is
activated and N.O. to COM contacts are shorted
Dimensions 115 x 75.9 x 32.5 mm (4.52 x 2.98 x 1.28 in.)
Downloads:

Reviews

Q&A

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Venmo
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Trust Guard Security Scanned