Invensys’ Wonderware Business Unit Launches Online ArchestrA® Technology Test Drive Participants Experience Hands-on ArchestrA Technology Demonstration Using FactorySuite A² Products

LAKE FOREST, Calif., Oct. 23, 2003 – Wonderware, a business unit of Invensys Systems, Inc., today announced that it is offering a free online “test drive” of ArchestrA technology using Wonderware FactorySuite A² (“A-squared”) products -- including the Industrial Application Server, IndustrialSQL Server historian and market-leading InTouch visualization software.

Participants can log on to the test drive website (www.invensys.com/archestra) to participate in a hands-on demonstration of a Wonderware FactorySuite A² application built around version 1.5 of the Industrial Application Server. They will experience how the ArchestrA architecture eases and accelerates system setup and ongoing application development. The Industrial Application Server is the first product built on the ArchestrA architecture.

“This unique opportunity will give potential customers, systems integrators (SIs) and OEMs the opportunity to learn first-hand how the ArchestrA architecture ‘works behind the scenes’ of the latest FactorySuite A² products,” said Mark Davidson, vice president of marketing for Invensys’ Wonderware and ArchestrA business units.

“To use an automotive analogy, we know that our customers are in an on-going race against the competition to improve efficiency and product quality and increase profits. We help our customers win the race by offering an integrated race team of FactorySuite A² products and a formidable Industrial Application Server race car, all driven by the powerful, state-of-the-art engine – the ArchestrA software architecture.”

The interactive test drive shows participants how to set up and install a system network, create supervisory control applications and re-use templates for a plant-centric, modular approach to application development. With the Industrial Application Server, new applications are easily assembled from a library of standard, reusable components, or objects, without writing or compiling new code.

The online ArchestrA technology test drive can be completed at the user’s pace during multiple login sessions. A series of five test drive modules illustrates how simple it is to create a system network and configure an entire plant application model using ArchestrA technology. Test drivers also learn how to modify and maintain applications with built-in change management and remote software distribution facilities.

“The ArchestrA test drive clearly demonstrates how ArchestrA technology puts the ‘engine’ back into your engineering toolset for unprecedented levels of personnel productivity,” Davidson said. “And one of the best things about this software is that it already works with virtually all of the systems and networks that are installed in customers’ plants by utilizing a broad set of standard connectivity tools, including greater than 1,000 I/O Servers, OPC® Servers and DataAccess Servers.”

About Wonderware

Wonderware is an operating unit of the Production Management Division (PMD) of Invensys plc 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 human machine-interface (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, IndustrialSQL Server, InTouch, APV, Avantis, Burco, Dimetronic, Eurotherm, Foxboro, Hansen, IMServ, Lambda, Powerware, Safetran, SimSci-Esscor, Triconex and Westinghouse are trademarks of Invensys plc, its subsidiaries and affiliated companies. All other brands and product names may be the trademarks of their respective owners.