0 products currently in stock. Call our team for lead times if needed.


Available on back-order

4G LTE Cellular to Ethernet and Serial Secure Modbus Gateway/Router



Industrial Modbus-LTE Cat. 4 Gateway,1x RS-232/485, 1x RS-232, TB14, 2 DI, 2 Relays, GPS

0 products currently in stock.

The stock was last updated at 1:39 pm Sunday, 26 May, 2024. Please contact us for lead times if needed.

Series Description

A compact and rugged 4G Modbus Gateway
Based on ATOP’s Industrial-grade hardware, the MB5901B Series is a cost-effective Modbus Gateway for seamless conversion between Ethernet-based Modbus TCP and serial-based Modbus RTU/ASCII for demanding applications such as Industry 4.0 and Smart Grids. Its rugged, reliable hardware features high EMC protection, wide temperature operation, and programming and installation flexibility in one device, while its advanced performance protects your data over the Internet with secure IPsec VPN or OpenVPN tunnels, with its powerful CPU providing up to 37.9Mbps* software-assisted AES encryption.

In addition to offering installation flexibility, the MB5901B series’ configuration options enable it to be set up over Ethernet via Telnet, Web Browser, Serial Console, or our Windows Utility.

Maintenance 4.0
ATOP Virtual COM software provides a virtual environment for applications when accessing MB5901B through TCP. Special management via SMS can be performed, such as polling data, issuing commands and system reboots.

Added value
A dedicated I/O version provides 2 x digital inputs and outputs each. These are also accessible via dedicated Modbus Registers. The -B version model also provides 15 seconds of back-up power in the event of a power failure, allowing the device to relay the failure to the host.

Dimensions & Layout

Front/Top/Side/Back views

Additional information


Connector ports


Antennas/ SIM card

Band Options





, ,



Data Rate




, ,


Baud Rate

Data Bits

Stop Bits

Flow Control

Supported GNSS

USB Ports

USB Speed

USB Connector

Digital Inputs (DI)

Digital Outputs (DO)




Modbus Protocols

Input Voltage

Power Consumption

Power Redundancy

Reverse Polarity Protection


Dimension (W x H x D)



Reset Button

Operating Temperature

-40°C~70°C (-40°F~158°F)

Storage Temperature

Ambient Relative Humidity

Need Support?

We understand that it can be difficult to find the right products for your needs. That’s why our dedicated customer support team is available to assist you in any way possible. Whether you need help selecting the best product for your application or more information on a particular device, our knowledgeable staff is here to provide you with the answers you need. Contact us today for more information about how we can help you get the products and support you need!

Product Brand

ATOP Technologies is a leading brand in the world of online retail, providing a wide range of high-quality electronic products at affordable prices. Delivering ready-made and tailored industrial networking solutions, built to withstand the demands of industry and to meet specific project requirements.

MB5901B Series

The MB5901B-IO-4G-GPS is part of a wider series. A series refers to a collection of related products or components designed to work together seamlessly, typically within a specific industry or application. These series often share similar features and functionalities, ensuring compatibility and ease of integration for users.

Smart Ethernet remote I/O with Click&Go, 6 DIs, 6 relays, -40 to 75°C


Available on back-order

Add to quote

Smart Ethernet remote I/O with Click&Go Plus, 8 DIs, 8 DIOs, -40 to 75°C


Available on back-order

Add to quote

Controller with Cortex-A7 1GHz dual-core CPU, 512MB RAM, 3-in-1 serial port(s), Linux version, -40 to 75°C operating temperature


Available on back-order

Add to quote

x86 Computers. Intel 8th i7-8665UE 4.4GHz. 2GbE, 4COM, 6DI/2DO, HDMI/VGA, mSATA, Dual 2.5″ SSD/HDD slots, 2mPCIe, 4USB. QMA conn. 24-110VDC with isolation. -40 to 70°C W/O Coating


Available on back-order

Add to quote

x86 computer with Core i5-6442EQ CPU, 5x LAN, 9x USB, 4x Serial, 2x SSD, DC power


Available on back-order

Add to quote

x86 3U Intel Core i7-7820EQ CPU, single 100 to 240 VAC/VDC, -25 to 55°C w/o RAM/SSD/OS


Available on back-order

Add to quote

19 inch fanless panel computer with Intel Celeron 1.4GHz CPU, NMEA 0183, SSD trays, AC&DC power, tape bonding.

Add to quote

Arm-based Vehicle-to-ground computing platform with wide operating temerature multiple WWAN ports, with 4 mPCIe slots, and Linux pre-installed


Available on back-order

Add to quote

Arm-based wireless-enabled DIN-rail industrial computer with wide operating temperature, 1 serial ports, 2 LAN ports, 1 CAN port, Wi-Fi 802.11 a/b/g/n and CAT.1 LTE module for APAC built-in, and MOXA Industrial Linux pre-installed


Available on back-order

Add to quote

16 dBi at 5 GHz, N-type (female), single-band directional antenna


Available on back-order

Add to quote


Version Name Time Size Download
v1.0 Linux_Driver_x64 2021-03-29 210.16 KB Download
v5.60 Management Utility for Windows 2021-01-18 23.65 MB Download
v5.20 Management Utility for Windows 2016-10-28 16.21 MB Download


Version Name Time Size Download
v1.68c MB59XX Firmware (Download and install this file first if your present firmware version is 1.46 or earlier) 2022-10-27 16.14 MB Download
v1.68 MB59XX Firmware 2022-09-13 16.15 MB Download


Version Name Time Size Download
v1.1 Datasheet EN 2023-11-01 323.19 KB Download
v1.0 Datasheet EN 2022-12-01 344.18 KB Download
v0.9 Datasheet EN 2022-11-07 375.28 KB Download
v0.6 Datasheet EN 2019-07-15 376.07 KB Download
v0.5 Datasheet EN 2018-12-14 537.23 KB Download
v0.4 Datasheet EN 2018-06-07 548.55 KB Download
v0.3 Datasheet EN 2018-05-17 548.55 KB Download


Version Name Time Size Download
v1.4 MB59XX User Manual 2019-11-19 3.76 MB Download
v1.3 MB59XX User Manual 2018-04-17 3.7 MB Download

Hardware Installation Guide

Version Name Time Size Download
v1.0 SE5901B/MB5901B/PG5901B Hardware Installation Guide 2017-06-09 5.91 MB Download

Test reports

Version Name Time Size Download
MB5901B Declarations of Conformity 2023-03-09 349.06 KB Download
Supported Documents & Firmware Last Updated: March 5, 2024