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An image of the XE15 data diode.

Fend XE15
Data Diode

Fend’s patented hardware security solution is designed for the unique needs of industrial control systems. The Fend XE15 Data Diode is designed and built in the USA. Bring legacy industrial equipment online with the total security of full optical isolation.


No License Fees or Hidden Costs

XE15 Protocols & Applications

The Fend XE15 Data Diode includes the following protocols:


  • TCP/IP

  • Modbus Serial, Modbus TCP/IP

  • BACnet MSTP, BACnet IP 

  • LON-IP

  • Fend Cloud on AWS (with optional subscription)


Listen to industrial control system network traffic and send relevant data to on- or off-premise servers for storage or analysis. Help
prioritize maintenance tasks and equipment upgrades. 


Visualize time-series data / custom displays on Fend’s portal or other cloud platform.

A building automation systems with data being transferred through the XE15 data diode to remote equipment monitoring.

Setting up a diode is as easy as logging in the Fend Configuration Tool, selecting your protocols, entering some basic information. It takes minutes!

XE15 Data Diode Specifications

A graphic showcasing the XE15 data diode front panel and connection locations.

PDF Drawing

DWG Drawing

What's in the Box?

An image showing what’s included in the box which is the XE15 diode, an ethernet cable, and two 120VAC to 12VDC power supplies.

Every XE15 data diode comes with:

  • Two 120VAC to 12VDC power supplies

  • An Ethernet cable for setup

Additional Features

Provides continued insight during power outages or in environments with unstable electric power.

Power Loss Protection

On-board protection resists and recovers from Denial of Service (DOS) attacks 

DDoS Protection

Built-in anti-tamper protects against physical interference.

Tamper Resistance
Data Diode-industrial-optical-iso-simpli

Physically enforced one-way data flow prevents any malicious code from reaching the protected equipment or network. Fend’s diodes use full optical isolation that allows data out and nothing in.

Full Optical Isolation

Easily set up and configure your diode with Fend's Diode Configuration Tool

Field Configurable

Fend isolates the protected system and offers encrypted protocol options for data in transit.

Onboard Encryption

Rugged design allows Fend diodes to live alongside the equipment they protect. Flush mount and DIN rail options. ETL tested / FCC Certified.

Designed for Industry

Full electrical isolation between input and output sides of the diode prevents side-channel attacks over power lines.

icon-Separate power supplies v2.png
Separate Power Supplies

XE15 Data Diode Frequently Asked Questions 

What are the key benefits of an XE15 Data Diode?

Fend’s XE15 Data Diode provides unidirectional data transfer, ensuring enhanced network security, improved visibility into system data, and compliance with regulations. It is easy to deploy and use, integrates with existing security solutions, and offers high performance. The XE15 Data Diode is an ideal solution for organizations that need to securely transfer data across network boundaries.

What types of organizations or industries can benefit from using the Fend XE15 Data Diode?

The XE15 Diode can benefit a wide range of organizations and industries that need to securely transfer data across network boundaries. This includes energy and utility companies, oil and gas, water and wastewater treatment, manufacturing and industrial organizations, and many others. Any organization that is concerned about protecting critical infrastructure or is subject to regulations requiring the secure transfer of data can benefit from using the XE15 Data Diode to help ensure compliance and prevent data breaches.

Request a Quote

Ready to buy? Request a quote today!

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