SE5901B SDK Series

3G/4G LTE Cellular to Ethernet and Serial Secure Embedded Computer

  • Ideal for IoT and IIoT applications.
  • Extensive 3G and LTE Band Support:
    - EU: 2100/1800/850/2600/900/800MHz (B1/B3/B5/B7/B8/B20)
    - US: 1900/1700/850/700/600MHz (B2/B4/B5/B12/B13/B14/B66/B71)
  • Wide temperature range for Industrial-grade performance
  • 1 x 10/100/1000Mbps Ethernet port
  • 1 x RS-232/485 port – baud rate up to 921.6 Kbps
  • 1 x USB2.0 high speed OTG port; 1 x Port USB Power-only port
  • 2 x Digital Inputs; 2 x Relays in the I/O version
  • Additional embedded power-bank for fault-relay capability in B Version
SE5901B SDK Series
SE5901B SDK Series
SE5901B SDK Series
SE5901B SDK Series
SE5901B SDK Series
SE5901B SDK Series
SE5901B SDK Series
SE5901B SDK Series
SE5901B SDK Series
SE5901B SDK Series
SE5901B SDK Series
SE5901B SDK Series

Providing connectivity for the Internet of Things
ATOP’s Industrial Embedded Computer is your ideal flexible Gateway to the Internet of Things. It provides 3G/4G LTE, Serial, Ethernet and Cellular connectivity and additional I/Os and interfaces that can unlock your potential. Based on your specific application, it allows 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, SMS, Serial, I/Os and USB are needed.
SE5901B 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 SE5901B, it will extend your possibility while building your IoT applications.

Rugged and flexible for advanced developments
SE5901B embeds high EMC protection, wide temperature operation, programming and installation flexibility in one device. A dedicated I/O version provides 2 Digital Inputs and 2 Digital Outputs, GPS version provides Global positioning system geolocation and, specifically for the Internet of Things, a “B” version provides additional 15 seconds power during a power failure, allowing the device to relay back to the host the failure. This is Industry 4.0.

SE5901B (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


Hardware Specifications 
CPUTexas Instruments Sitara ARM Cortex A8 AM3354 800MHz
FlashSDK version: 64 MB NOR Flash (customizable request to 32MB and 128 MB)
RAMSDK version: 256 MB DDR2 (customizable request to 128 MB)
Real Time Clock (RTC)Yes - with external chip
Console PortYes - on-board connector
Reset ButtonYes
Wireless Interface    
Antennas/ SIM card1 (3G) or 2 (4G) - Included. Internal SIM card slot (x1)
Band OptionsVersionStandardBands
EUFDD LTE2100/1800/850/2600/900/800MHz
TDD LTE2600/2300/2500MHz (B38/B40/B41)
WCDMA2100/850/900MHz (B1/B5/B8)
USFDD LTE1900/1700/850/700/600bMHz
WCDMA1900/1700/850MHz (B2/B4/B5)
Data RateVersionStandardDownlink SpeedUplink Speed
EULTE-FDD150 Mbps50 Mbps
LTE-TDD130 Mbps30 Mbps
DC-HSPA+42 Mbps5.76 Mbps
WCDMA384 Kbps384 Kbps
USLTE-FDD150 Mbps50 Mbps
DC-HSPA+42 Mbps5.76 Mbps
WCDMA384 Kbps384 Kbps
Network Interface
StandardsIEEE 802.3 for 10BaseT
IEEE 802.3u for 100BaseT(X)
IEEE 802.3ab for 1000BaseT(X)
Ethernet Ports1x 10/100/1000BASE-TX RJ-45
Serial Interface
ConnectorD-Sub9 RS-232/485 software selectable (DB model)
14-Pin 5.08mm Terminal Block (integrated with DI/DOs)
Ports1 port RS-232/485 (2-wire) - (DB Model)
1 port RS-232/485 (2-wire) and 1 port RS-232 (IO model only)
Baud Rate50 ~ 921,600bps
Data Bits7, 8
Stop Bits1, 2
Flow ControlNone, Xon/Xoff, RTS/CTS (RS-232 only)
GNSS Interfaces
Supported GNSSGPS, Glonass, Beidou
Connector1x SMA
Other interfaces
USB ports2 x USB A Type (USB 2.0): 1-port High-Speed OTG + 1-port power only
SD cardMicro-SD card slot (internal)
Digital Inputs (DIs)2 channels photo coupler isolated digital input
Digital Outputs (DOs)2 channels relay outputs (normal open; 2A@24VDC)
BootloaderU-boot 2014.07
Linux kernelLinux 3.14.26 (SDK version)
Linux toolchainLinux 32 bits toolchain gcc (C/C++ PC cross compiler), glibc
Linux sample codeRS232, RS485, RTC, watchdog, LED, DI, DO, Buzzer, 3G/4G API, SMS,
Button, network socket
Input Voltage9-48 VDC - reverse polarity protection
Connector3-Pin 5.08mm Lockable Terminal Block
Power Consumption0.65A@12VDC (Approx. 7.8W)
Power RedundancyUSB DC 5V Power Input
Operating Temperature-40°C~70°C (-40°F~158°F)
Storage Temperature-40°C~85°C (-40°F~185°F)
Ambient Relative Humidity5%~95%, (Non-condensing)
HousingIP30 protection, SPCC metal housing
Dimensions(W x H x D)32mm x 122mm x 92mm
Weight400 g
InstallationDIN-Rail or Wall-Mount (optional kit)
Reset ButtonYes
SafetyCB (IEC/EN62368-1 & IEC/EN60950-1), UL60950-1
EN301489-1, EN301489-7, EN301489-19, EN301489-24, EN301489-52, EN301511,
EN301908-1, EN303413, ETSI EN300440-1/-2
EN61000-6-2, EN61000-6-4
IEC 61000-4-2ESDContact Discharge
Air Discharge
IEC 61000-4-3RS80-1000MHz
10 V/m
3 V/m
1 V/m
IEC 61000-4-4EFTDC Power Port
Signal Port
IEC 61000-4-5SurgeDC Power Port
DC Power Port
Signal Port
Line-to Line±0.5KV
Line-to Earth±0.5KV
Line-to Earth±1.0KV
IEC 61000-4-6CS0.15-80MHz10V rms3
IEC 61000-4-8PFMF(Enclosure)30 A/m4
ShockMIL-STD-810G Method 516.7
DropMIL-STD-810G Method 516.7
VibrationMIL-STD-810G Method 514.7
MTBF20.88 years according to MIL-HDBK-217F (Model average)
Warranty5 Years


SE5901B-4G-USContact Headquarter1XRS232/485, 4G(US)
SE5901B-IO-4G-USContact Headquarter2XRS232, 1xRS485, 4G(US), IO
SE5901B-IO-4G-GPS-USContact Headquarter2XRS232, 1xRS485, 4G(US), IO, GPS
SE5901B-4G-B-USContact Headquarter1XRS232/485, 4G(US)
SE5901B-IO-4G-B-USContact Headquarter2XRS232, 1xRS485, 4G(US), IO, Battery
SE5901B-IO-4G-GPS-B-USContact Headquarter2XRS232, 1xRS485, 4G(US), IO, GPS, Battery
SE5901B-4G-EUContact Headquarter1XRS232/485, 4G(EU)
SE5901B-IO-4G-EUContact Headquarter2XRS232, 1xRS485, 4G(EU), IO
SE5901B-IO-4G-GPS-EUContact Headquarter2XRS232, 1xRS485, 4G(EU), IO, GPS
SE5901B-4G-B-EUContact Headquarter1XRS232/485, 4G(EU)
SE5901B-IO-4G-B-EUContact Headquarter2XRS232, 1xRS485, 4G(EU), IO, Battery
SE5901B-IO-4G-GPS-B-EUContact Headquarter2XRS232, 1xRS485, 4G(EU), IO, GPS, Battery
SE5901B-IOContact Headquarter2XRS232, 1xRS485, 4G(EU), IO
UN315-1212 (US-Y)50500151120003GY-Type power adaptor, 100~240VAC input, 1.25A @ 12VDC output, US plug, LV6
UNE315-1212 (EU-Y)50500151120013GY-Type power adaptor, 100~240VAC input, 1.25A @ 12VDC output, EU plug, LV6
ADP-DB9(F)-TB559906231GFemale DB9 to Female 3.81 TB5 Converter
WMK-315-Black70100000000050GBlack Aluminum Wall Mount Kit
WL-7200-V1 WLAN Dongle59908002G802.11b/g/n 300M , USB Dongle


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


Version Name Time Size Download
v2.01 SE59XX Firmware 2021-03-23 13.86 MB


Version Name Time Size Download
v1.3 Datasheet EN 2023-11-01 349.12 KB
v1.2 Datasheet EN 2022-11-04 397.89 KB
v1.1 Datasheet EN 2021-11-09 466.89 KB
v0.9 Datasheet EN 2021-03-23 520.98 KB
v0.7 Datasheet EN 2019-07-15 488.64 KB
v0.5 Datasheet EN 2018-08-24 646.5 KB


Version Name Time Size Download
v1.2 SE59XX SDK User Manual 2018-05-02 2.25 MB
v1.1 SE59XX SDK User Manual 2018-02-05 2.41 MB
v0.4 SE59XX SDK User Manual 2019-09-10 2.55 MB
v0.3 AWS Getting started guide 2021-10-20 1.01 MB
v0.1 AWS Getting started guide 2021-08-19 907.53 KB
v0.5 SE59XX SDK User Manual 2021-04-13 2.55 MB

Hardware Installation Guide

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

Test reports

Version Name Time Size Download
v1.0 SE-MB-PG5901B Certifications CB(IEC) 2019-11-20 5.05 MB
v1.0 SE-MB-PG5901B Certifications CE 2019-11-20 27.44 MB
v1.0 SE-MB-PG5901B Certifications EN55032 EN55024 2019-11-20 7.77 MB
v1.0 SE-MB-PG5901B Certifications Environment 2019-11-20 6.05 MB
v1.0 SE-MB-PG5901B Certifications FCC 2019-11-20 17.22 MB
v1.0 SE-MB-PG5901B Certifications LVD 2019-11-20 6.2 MB
v1.0 SE-MB-PG5901B Certifications NCC 2019-11-20 24.06 MB
v1.0 SE-MB-PG5901B Certifications UL 2019-11-20 6.66 MB

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