MB5901B Series

3G/4G LTE Cellular to Ethernet and Serial Secure Modbus Gateway/Router

  • GPRS/3G/4G Cellular Protocol Gateway with extensive LTE Band support:
    - EU Model: 2100/1800/850/2600/900/800MHz (B1/B3/B5/B7/B8/B20)
    - US Model: 1900/AWS/850/700/700/1900MHz (B2/B4/B5/B13/B17/B25)
  • Industrial-grade hardware for operating in harsh environments
  • Wide temperature range for operations at extreme temperatures
  • VPN over IPsec or OpenVPN with throughput up to 37.9Mbps*
  • 1 x 10/100/1000Mbps Ethernet port, 1 x RS-232/485 port,up to 921.6 Kbps
  • Modbus TCP to RTU/ASCII conversion
  • Management via Web Browser, SMS, SNMP v1/v2c/v3
  • 2 Digital Inputs; 2 Digital outputs / Additional RS-232 in I/O version
  • Additional embedded power-bank for fault-relay capability (B version)
MB5901B Series
MB5901B Series
MB5901B Series
MB5901B Series
MB5901B Series
MB5901B Series
MB5901B Series
MB5901B Series
MB5901B Series
MB5901B Series
MB5901B Series
MB5901B Series
MB5901B Series

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.

Flexibility with Advance Performance
In addition to offering installation flexibility, the MB5901B Series Flexible configuration options enable it to be setup over Ethernet via Telnet, Web Browser, Serial Console, or our Windows Utility.

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. This is Maintenance 4.0.

A dedicated I/O version provides 2 x Digital Inputs and 2 x Digital Outputs. 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.

* : test carried out with one VPN-IPsec Tunnel, Peer-to-Peer mode, Ethernet cable. Performance can change based on the Cellular Network.

Network Interface
SpeedIEEE 802.3 for 10BaseT
IEEE 802.3u for 100BaseT(X)
IEEE 802.3ab for 1000BaseT(X)
Connector ports1x 10/100/1000BASE-TX RJ-45
Wireless Interface    
Wireless ModuleEU version: Quectel EC25-E
US version: Quectel EC20-A
Antennas/ SIM card1 (3G) or 2 (4G) - Included. Internal SIM card slot (x1)
Band OptionsVersionBandBands
EUFDD LTE2100/1800/850/2600/900/800MHz
TDD LTE2600/2300/2500MHz (B38/B40/B41)
WCDMA2100/850/900MHz (B1/B5/B8)
USFDD LTE1900/1700/850/700/700bMHz
UMTS1900/1700/850MHz (B2/B4/B5)
Data RateLTE-FDDVersionBandDownlink SpeedUplink Speed
EULTE-FDD150 Mbps50 Mbps
LTE-TDD130 Mbps35 Mbps
DC-HSPA+42 Mbps5.76 Mbps
UMTS384 Kbps384 Kbps
TD-SCDMA4.2 Mbps2.2 Mbps
EDGE236.8 Kbps236.8 Kbps
GPRS85.6 Kbps85.6 Kbps
USLTE-FDD100 Mbps50 Mbps
LTE-TDD61 Mbps18 Mbps
DC-HSPA+42 Mbps5.76 Mbps
UMTS384 Kbps384 Kbps
TD-SCDMA4.2 Mbps2.2 Mbps
EDGE236.8 Kbps236.8 Kbps
GPRS85.6 Kbps85.6 Kbps
Serial Interface
Connector14-Pin 5.08mm Terminal Block (integrated with DI/DOs) or D-Sub9 connector
Mode1 port RS-232/485 (2-wire) software selectable
Baud Rate1,200~921,600 bps
ParityNone, Odd, Even
Data Bits7, 8 software selectable
Stop Bits1, 2 software selectable
GNSS Interfaces
Supported GNSSGPS, Glonass, Beidou
Connector1x SMA
Other Interfaces
USB Ports2
USB Speed1 x USB 2.0 High Speed OTG; 1x USB power only
USB ConnectorUSB A Type
Digital Inputs (DI)2 x channels photo coupler isolated digital input
Digital Outputs (DO)2 x digital relay outputs. N.O.( [email protected])
ProtocolsARP, IPv4, DHCP Client, NTP Client, ICMP, TCP, UDP, HTTP, RFC2217, TELNET, NAT, IPsec or OpenVPN VPN tunneling. Max VPN throughput 37.9Mbps *; PPTP; SMTP/TLS
ManagementWeb, ATOP Device Management Utility, SNMPv1/v2c/v3, SMS
ConfigurationEmbedded Web-Server (Web UI), TELNET, Atop Device Management Utility
VirtualCOMWindows/Linux redirection software
Modbus Gateway Supported ModesEthernet: Modbus TCP Server/Client(or VCOM);
Serial: Modbus RTU/ASCII (master/slave)
Maximum number of Modbus clients/slavesModbus TCP: Maximum 16 clients;
Maximum 32 slave connections
Input Voltage9 - 48 VDC
Input Current (@ 9VDC)0.6 A @ 12 VDC
Power Consumption0.6A @ 12VDC (7.2 W Max)
Connector3-Pin 5.08mm Lockable Terminal Block
Power RedundancyUSB DC 5V Power Input
Reverse Polarity ProtectionYes
Physical CharacteristicsValue
HousingIP30 protection, SPCC metal housing
Dimension (W x H x D)32mm x 122mm x 92mm
InstallationDIN-Rail , Wall mount (optional kit)
Reset ButtonYes
Environmental Limits
Operating Temperature-40°C~85°C (-40°F~185°F)
Storage Temperature-40°C~85°C (-40°F~185°F)
Ambient Relative Humidity5%~95%, 55°C (Non-condensing)
SafetyEN 60950-1:2006, UL60950-1, IEC60950-1
EMC/RadioFCC Part 15, Subpart B, Class A
EN301489-19, EN301489-52, EN301908-1, EN303413, EN 55024, EN 55032, EN61000-6-4,
EN 61000-3-2, EN 61000-3-3, EN61000-6-2
RoHS 2Yes
IEC 61000-4-2ESDContact Discharge
Air Discharge
IEC 61000-4-3RSEnclosure Port10(V/m), 80-1000MHz3
IEC 61000-4-4EFTAC Power Port
DC Power Port
Signal Port
IEC 61000-4-5SurgeDC Power Port
DC Power Port
Signal Port
Line-to Line±1.0KV
Line-to Earth±2.0KV
Line-to Earth±2.0KV
IEC 61000-4-6CS0.15-80MHz10V rms3
IEC 61000-4-8PFMF(Enclosure)AC 50Hz 10A/m3
IEC 61000-4-11DIPAC Power Port>95%,Reduction,0.5period
30%, Reduction,25 period
>95%,Reduction,250 period
ShockMIL-STD-810G Method 516.7
DropMIL-STD-810G Method 516.7
VibrationMIL-STD-810G Method 514.7
Warranty5 Years
MTBF20.88 years according to MIL-HDBK-217F (Model average)
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MB5901B-4G-US4G (US)1 (DB9)
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MB5901B-4G-B-US4G (US)1 (DB9)Battery
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MB5901B-4G-B-EU4G (EU)1 (DB9)Battery
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MB5901B-IO-4G-GPS-B-EU4G (EU)1 (TB)2/2GPS - Battery
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