SE5904D Series

4-Port Industrial Secure Wide-Temperature Serial Device Server

  • Remotely monitor, manage, and control industrial field devices
  • Industrial EMC protection, wide temperature operation, -40°C~85°C
  • Fast-Ethernet ports or 2x 100/1000 SFP slots with RSTP Redundancy
  • 4 Software-selectable RS-232/RS-485/RS-422 serial ports, up to 921kbps
  • TCP Server/Client, UDP, Virtual COM and Tunneling modes supported
  • Embedded security with PPTP, IPsec or OpenVPN client/server
  • Isolated Redundant 12~48 VDC Power Inputs or powered (PoE models) through through the Ethernet cable (802.3af)
  • Configuration via Web Browser/ Serial Console/ Telnet/ Windows Utility
  • Rugged metal case with wall or DIN-Rail mount
SE5904D Series
SE5904D Series
SE5904D Series
SE5904D Series
SE5904D Series
SE5904D Series
SE5904D Series
SE5904D Series
SE5904D Series
SE5904D Series

Make Serial Devices Ready to the Network
The Industrial Serial Device Server SE5904D is a cost effective gateway for Ethernet (TCP/IP) and serial signal communications; allowing almost any serial device to be connected to a new or existing Ethernet network. By encapsulating serial data and transporting it over Ethernet, SE5904D offers full-duplex and bi-directional data seamlessly between the four serial ports and the Ethernet network, through 2x 10/100 Ethernet ports or 2x 100/1000 SFP Fiber slots.

Advanced embedded security
SE5904D embeds OpenVPN and IPsec VPN, that allows you to tunnel your data securely throught the internet and prevent unauthorized control of your Serial Devices by malicious people. The integrated Rapid Spanning Tree Protocol (RSTP), allows you to add a backup Ethernet link in the event the primary one fails.

Easy to Use
Flexible configuration options enable this unit to be setup over Ethernet by Telnet, Web Browser, Serial Console, or our Windows Utility. Packed in a rugged metal housing for wall or DIN-Rail mount with redundant 12-48 VDC wide range power input and one relay output, SE5904D is ideal for almost any industrial and manufacturing automation process. Atop Virtual COM software provides a virtual environment for applications when accessing SE5904D through TCP.

Specially Designed for Automation Fields and Harsh Environments
In industrial and manufacturing automation fields, SE5904D is used as a field device to connect the Ethernet through TCP/IP protocol directly. It is also specially designed for conjunction with PLCs, HMIs, Barcode Scanners, Data Terminals, and much more. Its design protects it from very harsh EMC and environmental conditions, making it a cost-effective choice for advanced applications.

Rugged and flexible for advanced developments
SE5904D embeds high EMC protection, wide temperature operation, programming and installation flexibility in one device. PoE versions can be powered through Power-over-Ethernet (PoE 802.3af), without additional cabling and power supply. SDK versions allow you to make use of the powerful hardware and develop your own applications on top of Atop’s reliable SDK.

Network Interface
SpeedIEEE 802.3 10BaseT
IEEE 802.3u 100BaseT(X)
IEEE 802.3u for 100Base-X (SFP version only)
IEEE 802.3z for 1000Base-X (SFP version only)
PoE standard supportedIEEE 802.3 af (-PoE version only)
LAN ModeDual Subnets or Network Redundancy
Connector ports2x 10/100BASE-T(X) RJ-45 or
2x 100/1000 Base-X SFP Slots (SFP version)
Serial Interface
Connector4x D-Sub9 RS-232/422/485 software selectable (DB models) or

4x 5.08mm 5-Pin Terminal block RS-232/422/485 sw selectable (TB models)
Baud Rate1,200 ~ 921,600 bps software selectable
Data Bits7, 8 software selectable
Stop Bits1, 2 software selectable
Flow ControlNone, Xon/Xoff, RTS/CTS
Isolation3kV (Sis versions only)
Other Interfaces
USB Ports1
SpeedUSB 2.0
ConnectorUSB A Type
ProtocolsIPv4, ICMP, TCP, UDP, DHCP Client, SNMPv1,v2c,v3, HTTP, HTTPS, Telnet, SMTP/TLS, RFC2217, 802.1D-2004 RSTP, Security through OpenVPN (client/server) or IPsec (host-to-host or host-to-side) with up to 37.9Mbps VPN throughput, and PPTP
ConfigurationAtop Management Utility, Web UI, Telnet, Serial Console
VirtualCOMWindows/Linux redirection software
Link Modes - TCP ClientSingle destination or VirtualCOM
Link Modes - TCP Server4 Connections; VirtualCOM or reverse Telnet
Link Modes - UDPUp to 4 Ranges IP
Input VoltageDual 12 - 48VDC (non-PoE Models); or through Ethernet Cable (PoE versions)
Input Current (@ 12VDC)0.65 A @ 12 VDC
Power ConsumptionApproximately 8 W (Max)
Connector7-Pin 5.08mm Lockable Terminal Block
Power RedundancyYes
Reverse Polarity ProtectionYes
Relay Output1A @ 30 VDC (normal open)
Physical CharacteristicsValue
HousingIP30 SPCC housing
Dimension (W x H x D)55 x 145 x 113 mm
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)
SafetyIEC/EN 61010-1, UL61010-1, IEC/EN 61010-2-201, UL61010-2-201, EN62368-1
EMCFCC Part 15, Subpart B, Class A
EN 55032, EN 61000-3-2, EN 61000-3-3, EN 55024, EN 61000-6-2, EN 61000-6-4
IEC 61000-4-2ESDContact Discharge±6kV3
IEC 61000-4-2ESDAir Discharge±8kV3
IEC 61000-4-3RS80-1000MHz10 V/m3
IEC 61000-4-3RS1.4-2.0GHz3 V/m2
IEC 61000-4-3RS2.0-2.7GHz1 V/m1
IEC 61000-4-4EFTDC Power Port±2.0kV3
IEC 61000-4-4EFTSignal Port±2.0KV4
IEC 61000-4-5SurgeDC Power PortLine-to Line±1.0KV3
IEC 61000-4-5SurgeDC Power PortLine-to Earth±1.0KV2
IEC 61000-4-5SurgeSignal PortLine-to Earth±2.0K3
IEC 61000-4-6CS0.15-80MHz10 Vrms3
IEC 61000-4-8PFMFEnclosure30 A/m4
ShockMIL-STD-810G Method 516.7
Drop (Freefall)MIL-STD-810G Method 516.7
VibrationMIL-STD-810G Method 514.7
MTBF14.56 Years (according to MIL-HDBK-217F)
Warranty5 Years
SE5904D-4P-DB1P1SE5904D0004GInd. 4-Port Serial Device Server, 10/100BASET(X), DB92 (RJ45)4 (DB9)
SE5904D-4P-TB1P1SE5904D0005GInd. 4-Port Serial Device Server, 10/100BASET(X), TB52 (RJ45)4 (TB)
SE5904D-4P-Sis1P1SE5904D0006GInd. 4-Port Ser. Dev. Serv, 10/100BASET(X), 2kV Isolated2 (RJ45)4 (TB)
SE5904D-4P-PoE-DB1P1SE5904D0001GInd. 4-Port Ser. Dev. Serv, 10/100BASET(X)with PoE, DB9 2 (RJ45)4 (DB9)
SE5904D-4P-PoE-TB1P1SE5904D0002GInd. 4-Port Ser. Dev. Serv, 10/100BASET(X)with PoE, TB52 (RJ45)4 (TB)
SE5904D-4P-PoE-Sis1P1SE5904D0003GInd. 4-Port Ser. Dev. Serv, RJ45, PoE, 2kV Isolated2 (RJ45)4 (TB)
SE5904D-4P-G-DB-SFP1P1SE5904DG001GInd. 4-Port Ser. Device Server, 100/1000BASEX SFF, DB92 (SFP)4 (DB9)
SE5904D-4P-G-TB-SFP1P1SE5904DG002GInd. 4-Port Serial Device Server, 100/1000BASEX SFP, TB52 (SFP)4 (TB)
SE5904D-4P-G-Sis-SFP1P1SE5904DG003GInd. 4-Port Serial Serv, 100/1000BASEX SFP, 2kV Isolated2 (SFP)4 (TB)
SDR-75-2450500752240001G75W/3.2A DIN-Rail 24VDC power supply with 88~264VAC / 124~370VDC input
CBL-RJ45(8P)-DB9(F)-90-C50891971G8-pin RJ45-DB9 debug cable, 90cm
GDC-12059906861G120mm copper woven grounding cable
ADP-DB9(F)-TB559906231GFemale DB9 to Female 3.81 TB5 Converter
WMK-450-Black70100000000052GAluminum wall mount kit
AXGD-5854-0513522AXGD5854001G SFP Transceiver, 1250Mbps, 850nm, Multi-mode, 550m, 3.3V,
-40°C to +85°C, DDMI
AXGD-1354-0523522AXGD1354001GSFP Transceiver, 1250Mbps, 1310nm, Multi-mode, 2km, 3.3V,
-40°C to +85°C, DDMI
AXGD-1354-0533522AXGD1354011G SFP Transceiver, 1250Mbps, 1310nm, Single-mode, 10km, 3.3V,
-40°C to +85°C, DDMI
AXGD-3354-0593522AXGD3354001G SFP Transceiver, 1250Mbps, 1310nm, Single-mode, 40km, 3.3V,
-40°C to +85°C, DDMI


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


Version Name Time Size Download
v1.77 SE59XX Firmware 2024-01-30 18.51 MB
v1.74 SE59XX Firmware 2023-07-12 18.67 MB
v1.7 SE59XX Firmware 2022-11-03 18.11 MB
v1.32 SE59XX Firmware 2018-12-05 0 B
v1.66 SE59XX Firmware 2022-01-04 18 MB
v1.51 SE59XX Firmware 2020-08-06 17.53 MB
v1.46 SE59XX Firmware 2020-01-15 17.31 MB
v1.40 SE59XX Firmware 2019-06-06 0 B
v1.18 SE59XX Firmware 2018-05-04 12.7 MB
v1.10 SE59XX Firmware 2017-11-24 11.68 MB


Version Name Time Size Download
v1.4 Datasheet EN 2023-12-25 394.79 KB
v1.3 Datasheet EN 2023-11-01 339.69 KB
v1.2 Datasheet EN 2023-09-05 383.38 KB
v1.1 Datasheet EN 2023-06-14 382.81 KB
v0.9 Datasheet EN 2020-07-10 607.66 KB
v0.8 Datasheet EN 2018-05-18 506.18 KB
v0.7 Datasheet EN 2018-05-02 512.78 KB


Version Name Time Size Download
v1.9 SE59XX User Manual 2022-11-03 5.35 MB
v1.2 SE59XX User Manual 2018-04-26 4.25 MB
v0.1 AWS getting started guide 2021-08-19 907.53 KB
v1.6 SE59XX User Manual 2019-08-22 4.89 MB
v1.5 SE59XX User Manual 2019-07-23 4.52 MB
v1.4 SE59XX User Manual 2019-01-30 4.54 MB
v1.3 SE59XX User Manual 2018-12-05 4.57 MB
v1.8 SE59XX User Manual 2021-03-19 5.23 MB

Hardware Installation Guide

Version Name Time Size Download
v1.1 SE5904D/MB5904D/PG5904D Hardware Installation Guide 2016-03-23 3.81 MB

STP/DXF drawings

Version Name Time Size Download
v1.0 STP file PG-SE-MB5904D 2022-07-07 1.87 MB

Test reports

Version Name Time Size Download
SE5904D Declarations of Conformity 2023-03-10 294.11 KB
v1.0 SE-MB-PG5904D Certifications CE_FCC 2019-11-20 3.59 MB
v1.0 SE-MB-PG5904D Certifications EN61000-6-2&4 2019-11-20 6.11 MB
v1.0 SE-MB-PG5904D Certifications Environmental 2019-11-20 4.6 MB
v1.0 SE-MB-PG5904D Certifications LVD 2019-11-20 3.62 MB
v1.0 SE-MB-PG5904D Certifications UL 2019-11-20 157.83 KB

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