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4-Port Industrial Ethernet to Serial Embedded Computer



Ind. 4-Port Ser. Dev. Serv, 10/100BASET(X)with PoE, TB5

0 products currently in stock.

The stock was last updated at 7:53 pm Sunday, 21 July, 2024. Please contact us for lead times if needed.

Series Description

Providing connectivity for the Internet of Things
ATOP’s Industrial Embedded Computer is your ideal flexible Gateway to the Internet of Things. It provides Serial and Ethernet connectivity, redundant power input and a relay output in a reliable and powerful Industrial Grade platform that can unlock your potential. Based on your specific application, it allowing almost any serial device to be connected, providing and retrieving the data you need to and from the cloud, no matter what provider you’re using.

Write your customized application in C language and Run it on its powerful Industrial low-power 800MHz ARM Cortex A8 TI Sitara AM3354 CPU. Make flexible use of your peripherals, no matter storage, Serial, or USB are needed.
SE5904D is available as a SDK/BSP. The SDK development environment reserves the maximum flexibility. Bottom to top editable software architecture allowed easily to customize or add the IoT applications for different using scenarios. Included Linux kernel source extend the capability of the kernel layer. Changeable WEB pages allowed to easily customize proprietary style. With the SE5904D, it will extend your possibility while building your IoT applications.

Rugged and flexible for advanced developments
SE5904D embeds high EMC protection, wide temperature operation, programming and installation flexibility in one device. A dedicated PoE version allows you to power on the device through Power over Ethernet (IEEE802.3af) without the need of separate and space consuming power supply. SFP version enhances the device providing long range fiber optic connectivity capability, in the need of a stable and remote fiber connection.

SE5904D (SDK) block diagram
The IoT (Internet of Things) or IIoT (Industrial Internet of Things) is a trending topic these days. It’s all about bringing devices, sensors, actuators, data and commands to the cloud, with the ultimate goal to improve the quality of life, the services Smart Cities can offer, saving energy or saving money. This requires two things: to vehiculate the collected data to the cloud in a format that can be recognized and processed and to process, compute and analyze all this amount of data in real time.
It is not a concept far from reality. Imagine you’d like to bridge a Modbus Sensor to the cloud. And you’d like to have the application running on the cloud to be able to process multiple sensors’ data, and to trigger some event in some specific stations along the network. You may also have the need to override the cloud control and manage the application locally. Any application has its story.

Here at ATOP, we understand these different needs and we are providing you different working models, based on what your needs are.

Use the Standard SDK, programmable embedded computer if:
You are familiar with Linux OS
You have ANSI C programming skills
Your application is strictly time/ performance sensitive
Your application has very critical exception handling requirements

Our SDK products provide:
Ported, proven and tested peripherals (such as  I/Os, Ethernet, Serial, Relays) and integrated drivers
ATOP customized Linux Kernel and network protocols
Ported, debugged and proven third party applications
Utilities and APIs to control the hardware in an easy and effective way
Opened software architecture to create your own system image
Linux source code to extend the kernel capability
Modifiable WEB contents to customize proprietary WEB style
Example of source code

Additional information




LAN Mode

GNSS Input ports

1PPS Output

10MHz Reference Output




Configuration and monitoring

Supported MIBs


Dimension (core unit) (W x H x D)

Weight (core unit)


Power inputs (core unit)

Output modules (core unit)

Operating Temperature

-40°C~85°C (-40°F~185°F) / LCM display maximum 0~70 °C

Storage Temperature

Ambient Relative Humidity

Model Name


Input Voltage

Input Current (Max)

Input Power (Max)

Relay Output


Protocols supported


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.

SE5904D SDK Series

The SE5904D-4P-PoE-TB-SDK 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.

Wall-mounting kit, 55mm high


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Cable/CBL-M68M25x8-100 (SCSI VHDCI 68 male to 8-port DB25 male connection)


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3 dBi RP-SMA omnidirectional antenna


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Universal mounting kit for ATEX router


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Managed Ethernet switch with 3 10/100BaseT(X) ports, and 2 100BaseFX multi-mode ports with SC connectors, -40 to 75°C operating temperature


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Managed Ethernet switch with 6 10/100BaseT(X) ports, 3 100BaseFX single-mode ports with SC connectors, single power input 110/220 VAC/VDC, -40 to 75°C operating temperature


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Managed Gigabit Ethernet switch with 4 10/100BaseT(X) ports, 2 10/100/1000BaseT(X), 2 100/1000BaseSFP ports, single power input 110/220 VAC/VDC, -40 to 75°C operating temperature


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L2 switch, 12 Giga ports 8 with PoE, 4 10G ports, 2 with PoE and 2 with bypass, -40 to 70℃


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LAST CHANCE TO BUY - 01/09/2024

Unmanaged Ethernet switch with 4 10/100BaseT(X) M12 ports and 4 10/100BaseT(X) PoE M12 ports, 48VDC, conformal coating, -40 to 75°C operating temperature


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Industrial 10/100BaseT(X) to 100BaseFX media converter, single-mode with ST connector, 1 isolated power supply (88-300 VDC or 85-264 VAC), -40 to 85°C operating temperature


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Version Name Time Size Download
v1.0 Linux_Driver_x64 2021-03-29 210.16 KB Download


Version Name Time Size Download
v2.01 SE5904D SDK Firmware 2021-03-03 11.02 MB Download


Version Name Time Size Download
v0.9 Datasheet EN 2023-12-25 419.46 KB Download
v0.8 Datasheet EN 2023-11-01 385.74 KB Download
v0.7 Datasheet EN 2021-03-03 562.62 KB Download
v0.4 Datasheet EN 2018-08-24 707.46 KB Download
v0.3 Datasheet EN 2018-05-18 721.47 KB Download
v0.2 Datasheet EN 2017-11-10 714.04 KB Download


Version Name Time Size Download
v1.2 SE59XX SDK User Manual 2018-05-02 2.25 MB Download
v1.1 SE59XX SDK User Manual 2018-02-05 2.41 MB Download
v0.1 AWS Getting started guide 2021-08-19 907.53 KB Download
v0.5 SE59XX SDK User Manual 2021-04-13 2.55 MB Download
v1.4 SE59XX Node-RED User Manual 2019-04-22 5.72 MB Download
v1.2 SE59XX Node-RED User Manual 2018-08-24 5.59 MB Download

Hardware Installation Guide

Version Name Time Size Download
v1.1 SE5904D/MB5904D/PG5904D Hardware Installation Guide 2016-03-23 3.81 MB Download
Supported Documents & Firmware Last Updated: July 21, 2024