tBOX323-835-FL - Intel Atom E3845 1.91GHz Bay Trail-I Embedded Rail PC with EN 50155/EN 50121 certification and EN 45545-2 compliance (-40C to +70C)


CE is a mandatory standard for products on the market in the European Economic Area. By CE marking a product, the manufacturer ensures that the item meets the essential safety requirements set out in the applicable CE directive.

EN 45545

These devices offer EN 45545 fire protection approval when installed in railway vehicles

EN 50121

EN 50121 Industrial standard for Railway Networking and Communication products

EN 50155

EN 50155 is the European standard for electronic devices used in railway applications. The device must adhere to the strict specifications of EN 50155 including -25C to +70C wide operating temperature range, resistance to humidity, shocks, vibrations and radiation – all environmental demands encountered in the rail industry.

Extended Wide Temperature

These products utilise high quality industrial grade components enabling them to work in extended wide temperature environments. They are capable of running below -20C and above +70C and offer further protection than standard wide temperature rated products.


These products use heatsink, heatpipe and extrusion technology to dissipate the heat generated by the system rather than using traditional fans thus improving system reliability and longevity.


This product fully adheres to the Restriction of Hazardous Substances Directive 2002/95/EC, RoHS for short.  The directive covers the restriction of use of certain hazardous substances in electrical and electronic equipment and was adopted in February 2003 by the European Union.

Taiwan Excellence

The Taiwan Excellence is an award delivered by the Ministry of Economic Affairs (MOEA) and Taiwan External Trade Development Council (TAITRA) to encourage Taiwanese industries to upgrade and incorporate value into their product design. The Taiwan Excellence Award is based on four different criteria : research and development, design, quality, and marketing. Each product must score high in each category in ordered to be selected.

Wide Voltage

These devices and systems have been designed to accept a wide voltage DC power input. This feature is desirable in the industrial market where a fixed voltage level or mains AC power cannot be guaranteed.

tBOX323-835-FL Embedded Rail PC
tBOX323-835-FL Rear
Featured in:Rail Approved ComputersRail Box PCs with multiple serial portsAxiomtek tBOX Embedded Systems

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tBOX323-835-FL with Intel Atom E3845 1.91GHz CPU, 4GB DDR3L-1333 memory, two Gigabit LAN (M12) ports, one RS-232 port, four isolated RS-422/485 ports (-40C to +70C)
Peripheral information
Lead time*
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Audio cable M12D-M 5P to 2x Jack 30CM
1 in stock
M12 Waterproof DC Power Cable for tBOX
Remote Power Switch Cable for tBOX
M12 Water Proof LAN Cable for tBOX 4pin to RJ45
3G/GPRS (UC20G) Kit (GPRS antenna supported)
WiFi 802.11b/g + Bluetooth 2.0 + Antenna for Box series
Internal WiFi Antenna Cable for tBOX
Waterproof USB Cable with M12 Connector, Length 1.8M
* Lead time is indicative and is subject to change at time of ordering. Next business day delivery on in-stock products only (when ordered before 3pm).
** Contact us for quantity or project pricing.
† Additional delivery charge may be incurred for certain postcodes (calculated at checkout)
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tBOX323-835-FL overview

  • EN50155, EN50121 certified for rail applications
  • EN45545-2 fire resistance compliant
  • On-board Intel Atom Bay Trail-I E3845 4C 1.91GHz processor
  • High performance DDR3L-1333 4GB memory built-in
  • HDMI and VGA graphic outputs
  • Isolated RS-422/485 ports and digital I/O ports
  • Lockable I/O interface and two M12 LAN A-coded and power input ports
  • Supports one 2.5” SATA HDD and one CFast socket for storage
  • Supports Wi-Fi and Bluetooth connectivity
  • Internal mini PCIe slots and two SIM card slots for 3G/4G connectivity
  • Instant fuse repair design
  • 50G shock with SSD/CFast storage (operating), MIL-STD-810G
  • Wide 9 to 36V DC power input range
  • Extended operating temperature range of -40°C to +70°C (EN50155 Class TX)
The tBOX323-835-FL is designed for rail rolling stock applications. Integrated with an on-board quad core Intel Atom E3845 1.91GHz processor and 4GB of low powered DDR3L memory, the fanless tBOX323-835-FL boosts its computing performance and features a rich I/O design with five isolated COM ports, two M12 LAN connectors, USB 2.0 ports, and one isolated 8-bit digital I/O port.

The tBOX323-835-FL rail PC also provides VGA and HDMI outputs for in train surveillance requirements. The tBOX323-835-FL is an ideal all in one IoT (Internet of Things) solution for various rail-based applications, including railway gateways, controllers, digital signage management and rolling stock surveillance.

Certified under EN50155 and EN50121 for rolling stock and compliant with EN45545-2 for fire resistance, this rugged embedded PC platform operates reliably in a -40ºC to 70ºC operating temperature range (EN50155 Class TX) and in high vibration environments offering up to 50G shock protection when using solid state storage.

Impulse can configured the tBOX323-835-FL to your exact requirements and pair it with a range of rail certified Ethernet switches, serial converters, access points and more.

For more information about the tBOX323-835-FL please contact our dedicated rail specialists on +44 (0)1782 337 800 or alternatively submit an enquiry.
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