Invensys’ Wonderware Business Unit Releases New Version of Industrial Application Server Adds Support for Microsoft Windows 2003 Operating System and Stratus ftServer Hardware Family

LAKE FOREST, Calif., Sept. 25, 2003 -- Wonderware, a business unit of Invensys Systems, Inc., today announced the release of a new version of its FactorySuite A²™ Industrial Application Server, which is built on the ArchestrA® software architecture. Version 1.5 now offers support for the Microsoft® Windows® Server™ 2003 operating system running on any associated hardware, and the Stratus® ftServer® hardware family of continuous-availability servers.

The Industrial Application Server 1.5 has been thoroughly tested on the newly released Windows Server 2003 operating system, enabling users to immediately leverage its increased performance, functionality and scalability. It also supports the Microsoft Windows 2000 Professional, Microsoft Windows 2000 Advanced Server and Microsoft Windows XP operating systems.

In addition, version 1.5 supports the Stratus ftServer family, which provides new continuous-availability options for supervisory control and plant intelligence systems using Wonderware® FactorySuite A² products. The Stratus product family support includes the ftServer 3300 series, a cost-effective, fault-tolerant server designed for continuous uptime.

“Wonderware’s timely support for the Microsoft Windows Server 2003 operating system in the Industrial Application Server enables our customers to simplify and unify their automation and IT computing environments by using the latest Microsoft .NET technology across both their automation and information domains,” said Steve Lewarne, vice president of product marketing for the Wonderware and ArchestrA business units. “In addition, the ability to leverage the Stratus ftServer family matches our customers’ desire to use the Industrial Application Server software in mission-critical, continuous operating environments.

“This is further proof that both the Industrial Application Server and the underlying ArchestrA architecture have been designed to easily keep pace with the latest technologies and the industrial marketplace as a whole.”

Version 1.5 of the Industrial Application Server also offers major new enhancements to provide even more capable FactorySuite A² solutions, offering increased performance, robustness, upward scalability, high availability, improved alarm and system management and object validation. It further decreases application engineering costs with the addition of several reusable component templates designed for plant intelligence and calculations, such as Event Monitor, SQL Server Access, OLE-DB Access and Generic Calculator application objects.

The Industrial Application Server provides real-time data acquisition, alarm and event management, data manipulation services and collaborative engineering capabilities, which have been designed from the ground up for use across a broad range of industrial applications. Its primary benefits to industry include significantly reduced engineering time, lower cost of application ownership and maintenance, scalability, flexibility and an extensible software framework.

The Industrial Application Server is central to the evolution of the Wonderware FactorySuite A² product family. The “A-squared” signifies the presence of the ArchestrA architecture.

About Wonderware

Wonderware is a business unit of Invensys Systems, Inc., and is the world’s leading supplier of industrial automation software. Founded in 1987, Wonderware pioneered the use of the Microsoft Windows operating system in HMI automation software for manufacturing operation systems. Wonderware powers intelligent plant decisions in real time.

Based in Lake Forest, Calif., Wonderware has regional sales and development offices throughout North America, Europe, Latin America and Asia to provide support to its network of more than 160 distributor offices. Wonderware has approximately 300,000 software licenses in approximately 100,000 plants worldwide, which is about 30 percent of the world’s 335,000 plants with 20 or more employees.

About Invensys

Invensys is a global leader in production technology. The group helps customers improve productivity, performance and profitability using innovative services and technologies and a deep understanding of their industries and applications.

Invensys Production Management works closely with customers to increase performance of production assets, maximize return on investment in production and data management technologies and remove cost and cash from the supply chain. The division includes APV, Avantis, Eurotherm, Foxboro, IMServ, SimSci-Esscor, Triconex and Wonderware. These businesses address process and batch industries -- including oil and gas, chemicals, power and utilities, food and beverage, and personal health care -- and the discrete and hybrid manufacturing sectors.

Invensys Rail Systems is a global leader in the design, manufacture, supply, installation, commissioning and maintenance of safety related rail signaling and control systems as well as a complete range of rail signaling and communications products. The business includes Westinghouse Rail Systems Limited (WRSL), Dimetronic Signals, Safetran Systems, Burco Services, Westinghouse Signals Australia and Foxboro Transportation. WRSL was recently awarded two contracts valued at more than £850m (US$1.3 billion) for the renewal of signaling on the London Underground.

Invensys also currently serves other market sectors through its Development Division. The businesses in this division are: Appliance Controls, APV Baker, Climate Controls, Hansen Transmissions, Lambda, Metering Systems and Powerware. Invensys is actively seeking to develop these businesses through equity partners or new owners.

Invensys operates in more than 60 countries, with its headquarters in London. For more information, visit www.invensys.com.

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Invensys, Wonderware, ArchestrA, FactorySuite, FactorySuite A2, APV, APV Baker, Avantis, Burco Systems, Dimetronic, Eurotherm, Foxboro, Hansen Transmissions, IMServ, Lambda, Powerware, Safetran Systems, SimSci-Esscor, Triconex and Westinghouse Signals are trademarks of Invensys plc, its subsidiaries and affiliated companies. All other brands and product names may be trademarks of their respective owners.