Media Advisory: Sierra Wireless to present at Lehman Brothers’ Worldwide Wireless and Wireline Conference

Vancouver, B.C.-May 24, 2007

Sierra Wireless (NASDAQ: SWIR - TSX: SW) today announced the company’s upcoming participation in the Lehman Brothers’ Worldwide Wireless and Wireline Conference, to be held May 30 through June 1 in New York.

Jason Cohenour, President and Chief Executive Officer for Sierra Wireless, will be presenting on Thursday, May 31 at 2:15 P.M. Eastern time.

The presentation will be available live by webcast over the Internet at cc.talkpoint.com/LEHM002/053007a_jw/default.asp?entity=Sierra. The archived webcast will remain available at the above link for three months following the presentation.

For further information about the Lehman Brothers’ Worldwide Wireless and Wireline Conference, please visit www.lehman.com/conferences/2007WWW/index.html.

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.