Sierra Wireless AirCard® 597E ExpressCard to launch on the Sprint Mobile Broadband Network

Vancouver, B.C.-May 27, 2007

Sierra Wireless (NASDAQ: SWIR - TSX: SW) today announced plans to supply the new Sierra Wireless AirCard® 597E ExpressCard for operation on the Sprint Mobile Broadband EV-DO Rev A network. Designed to provide mobile broadband connectivity for notebook computers with the newer ExpressCard slots, the Sprint Mobile Broadband ExpressCard by Sierra Wireless will be available online at www.sprint.com and in business sales channels beginning in mid-June. Sprint is demonstrating the AirCard 597E ExpressCard this week at Interop, held at the Mandalay Bay Convention Center in Las Vegas until May 25 (Booth #837).

In addition to its more compact form factor, the AirCard 597E ExpressCard offers several advancements over earlier cards, including built-in assisted GPS (A-GPS) to support location-based services. Using the GPS chipset and the latest version of Sprint Connection Manager, users can conduct a “locate and search,” which plots their current location on a map and then searches for nearby points of interest. The AirCard 597E also offers a high-performance integrated antenna to improve signal capture and data speed, and the new 65-nanometer (65nm) MSM6800A chipset from QUALCOMM, with improved power-efficiency, wireless data and GPS performance.

“The AirCard 597E ExpressCard is not only the smallest external modem we have ever produced, but the most functional as well,” said Dan Schieler, senior vice president, Worldwide Sales for Sierra Wireless. “It offers the latest chipset technology, as well as new features and enhancements to improve the user experience and help our customers take full advantage of the services offered on the Sprint Mobile Broadband network.”

AirCard 597E ExpressCard

  • Transfers data wirelessly at speeds of up to 3.1 Mbps on the downlink and 1.8 Mbps on the uplink, using the latest EV-DO Rev A technology
  • Provides mobile broadband access for notebook computers with ExpressCard/34 and ExpressCard/54 slots
  • Supports Location Based Services, with a built-in GPS antenna designed for accuracy and fast location fix
  • Features a high-performance, durable antenna optimized for signal acquisition and speed, as well as a connector for an optional external antenna to improve performance in fringe areas or more demanding user conditions
  • Incorporates the new 65nm MSM6800A™ chipset from QUALCOMM, with improved power-efficiency, wireless data and GPS performance.

For more information about the Sierra Wireless AirCard 597E ExpressCard, please visit http://www.sierrawireless.com/product/ac597e.aspx. To contact the Sierra Wireless Sales Desk, call 604-232-1488 or e-mail sales@sierrawireless.com.

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About Sierra Wireless
Sierra Wireless (NASDAQ: SWIR – TSX: SW) develops and markets wide area wireless solutions for mobile computing. The Sierra Wireless product portfolio includes the award-winning AirCard® line of wireless modems, embedded modules for original equipment manufacturers (OEMs), and the MP line of rugged, vehicle-mounted wireless modems. Sierra Wireless also offers professional services to OEM customers during product development, leveraging the company’s expertise in wireless design and integration to provide built-in wireless connectivity for notebook computers and other portable computing devices. Sierra Wireless is headquartered in Richmond, British Columbia, Canada, with additional offices in Carlsbad, California, London, and Hong Kong. For more information about Sierra Wireless, please visit www.sierrawireless.com.

“AirCard” is a registered trademark of Sierra Wireless. Other product or service names mentioned herein may be the trademarks of their respective owners.

Forward Looking Statements
This press release contains forward-looking statements that involve risks and uncertainties. These forward-looking statements relate to, among other things, plans and timing for the introduction or enhancement of our services and products, statements about future market conditions, supply conditions, channel and end customer demand conditions, revenues, gross margins, operating expenses, profits, and other expectations, intentions, and plans contained in this press release that are not historical fact. Our expectations regarding future revenues and earnings depend in part upon our ability to successfully develop, manufacture, and supply products that we do not produce today and that meet defined specifications. When used in this press release, the words "plan", "expect", "believe", and similar expressions generally identify forward-looking statements. These statements reflect our current expectations. They are subject to a number of risks and uncertainties, including, but not limited to, changes in technology and changes in the wireless data communications market. In light of the many risks and uncertainties surrounding the wireless data communications market, you should understand that we cannot assure you that the forward-looking statements contained in this press release will be realized.