Express Logic NetX Duo TCP/IP Stack Earns UL Safety Certifications

Certifications make NetX Duo ideal choice for IoT development that must meet widely required safety standards

Express Logic, Inc., the worldwide leader in royalty-free, real-time operating systems (RTOS), today announced that its industrial grade NetX Duo™ IPv4/IPv6 TCP/IP stack has become the first embedded TCP/IP stack to achieve compliance with UL 60730-1 Annex H, CSA E60730-1 Annex H, IEC 60730-1 Annex H, UL 60335-1 Annex R, IEC 60335-1 Annex R, and UL 1998 safety standards for software in programmable components. UL is a global, independent, safety-science company with more than a century of expertise in innovating safety solutions and about 22 billion products bearing its compliance mark.

The compliance with UL/IEC 60730, UL/IEC 60335, and UL 1998 builds on NetX Duo’s current comprehensive safety certification credentials. NetX Duo already boasts the highest level of pre-certification for industrial safety’s IEC 61508 SIL 4, medical’s IEC 62304 Class C, automotive’s ISO 26262 ASIL D, and rail transportation’s EN 50128 SW-SIL 4 standards—compliance necessary for use in safety-critical devices. NetX Duo also has earned Phase-2 IPv6–Ready Logo certification and Ixia’s IxANVL TCP/IP RFC validation.

Moreover, embedded developers working with NetX Duo can add on TLS 1.1 and 1.2 or DTLS to secure data at the socket layer or IPsec to secure information at the network layer. Now, with NetX Duo’s UL/IEC 60730, UL/IEC 60335, and UL 1998 certification, developers can use NetX Duo to develop components for connected appliances and white goods, such as washing machines, dishwashers, dryers, refrigerators, freezers, and ovens.

“The IoT has brought new and exciting connectivity to consumer markets, such as the connected home, and along with that connectivity comes a demand for ever-more stringent compliance with global safety standards,” said William E. Lamie, CEO of Express Logic. “With the pre-certification of NetX Duo for such standards, embedded developers now have an industrial-grade, high performance TCP/IP stack that makes it easier for them to deliver to those markets.”

Pricing and Availability

NetX Duo is available today at license prices starting at $15,000. UL and TÜV certifications are available each with licenses starting at $25,000.

About Express Logic and ThreadX

Headquartered in San Diego, CA, Express Logic, Inc., offers the industry’s most advanced run-time solutions for deeply embedded applications, including the popular ThreadX® RTOS, the high-performance NetX™ and NetX Duo™TCP/IP stacks, the FileX® embedded FAT compatible file system, the USBX™ Host/Device USB protocol stack, and the GUIX™ embedded graphical user interface development toolkit. Most products from Express Logic include full source-code and all have no run-time royalties. For more information about Express Logic solutions, please visit, call 1-888-THREADX, or e-mail

Contact Information

Express Logic, Inc.

11423 West Bernardo Court
San Diego, CA, 92127

tele: 858.613.6640
fax: 858.613.6646

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