Industrial Cellular Router (3G)

This product is no longer being sold and might not be supported. Please see replacement part: MRD-455


✓ Industrial remote access using the Internet

• Economic and environmental benefits
• Access SCADA systems, HMI and PLCs remotely
• Wireless mobile broadband GPRS / EDGE / 3G / HSPA connection

✓ Designed for industrial applications

• Compact casing with proper DIN-rail mounting for easy integration
• All LEDs and interfaces on the front of the unit for easy access
• Isolated power supply to protect against transients and ground loops

✓ Secured resilient Internet access

• Dual SIMs to remove carrier dependency
• Easy to use firewall prevents unauthorized access
• Encrypted and secure data transmission with VPN-tunnels

✓ A wide-variety of solutions to common communication issues

• Connection manager monitors and ensures constant connectivity
• Simple replacements of analogue leased lines
• Ability to control and receive status changes via SMS


Remote access removes boundaries, eliminates the need for time consuming site visits and provide a network infrastructure suitable for today’s “always-on” society.

The MRD-355 industrial mobile broadband GPRS / EDGE / 3G router uses the Internet to cost effectively inter-connect systems, allowing HMI, PLCs, sensors etc to communicate with each other.

A compact design bundled with all interfaces and LEDs in the front make the unit extremely well suited for industrial applications. With isolation between the PSU and the Ethernet and serial ports the MRD-355 protects against issues caused by ground loops.

The dual SIM support in the device ensures that site connectivity is not dependent on a single carrier, should something happen
the unit just switches to the other SIM.

Devices connected to the Internet require countermeasures towards cyber threats. The MRD-355 offers protection of transmissions from malicious eavesdroppers via encrypted communication tunnels (VPN), and features a simple, yet powerful, packet inspection firewall.

The MRD-355 with its built-in serial port offers a simple modem replacement solution with the benefit of not having to reprogram
or change any other component.

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Technical Specifications

Industrial Cellular Router (3G)
2 x 10/100 Mbit/s, RJ-45
1 x RS-232 port, 300 bit/s – 115.2 kbit/s
2 x Mini-SIM slots

Jennifer Mooney-Perrotta

Customer service, Westermo North America

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