AT&T and Cooper Power Systems to Offer Wireless Smart Grid Sensors

Business Wire, June 24, 2009

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About Cooper Power Systems

Cooper Power Systems, Inc., with revenues of approximately $1.4 billion, is a division of Cooper Industries, Ltd. (NYSE: CBE). Cooper Power Systems is a global manufacturer of world-class power delivery and reliability solutions for the electrical and industrial markets. Through its Energy Automations Solutions group, it is also a leading provider of software, communications and integration solutions that enable customers to increase productivity, improve system reliability, and reduce costs. For more information, please visit www.cooperpower.com or www.cooperpowereas.com.

About AT&T

AT&T Inc. (NYSE:T) is a premier communications holding company. Its subsidiaries and affiliates – AT&T operating companies – are the providers of AT&T services in the United States and around the world. With a powerful array of network resources that includes the nation’s fastest 3G network, AT&T is a leading provider of wireless, Wi-Fi, high speed Internet and voice services. AT&T offers the best wireless coverage worldwide, offering the most wireless phones that work in the most countries. It also offers advanced TV services under the AT&T U-verseSM and AT&T │DIRECTVSM brands. The company’s suite of IP-based business communications services is one of the most advanced in the world. In domestic markets, AT&T’s Yellow Pages and YELLOWPAGES.COM organizations are known for their leadership in directory publishing and advertising sales. In 2009, AT&T again ranked No. 1 in the telecommunications industry on FORTUNE® magazine’s list of the World’s Most Admired Companies.

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