Timing of Sierra Wireless Second Quarter Financial Results

Vancouver, B.C.-July 23, 2007

Sierra Wireless (NASDAQ: SWIR - TSX: SW) will release its financial results for the quarter ended June 30, 2007 on Thursday, July 26, 2007. Sierra Wireless President and CEO, Jason Cohenour, and CFO, David McLennan, will hold a conference call with analysts and investors to discuss the results at 5:30 PM Eastern time the same day.

Conference Call and Webcast:

Date and Time:  Thursday, July 26 at 5:30 PM Eastern time

Conference call number: 1-800-733-7560 or 1-416-644-3416.
Webcast (listen only):  To access the web broadcast of the call, please enter www.newswire.ca/en/webcast/viewEvent.cgi?eventID=1855920. Microsoft Windows Media Player software is required. To download the software, go to: http://www.microsoft.com/windows/windowsmedia/download.

To participate in this conference call or webcast, please connect approximately five minutes prior to the commencement of the call.

Instant Replay:

For those unable to participate in the live call, an instant replay will be available.

· Dial-in: Dial 1-877-289-8525 or 1-416-640-1917 and enter passcode 21231741# to access the instant replay. (Available for 7 business days following the call.)

· Webcast: The Web broadcast will remain available at the above link for 90 days following the call.

About Sierra Wireless
Sierra Wireless modems and software connect people all over the world with mobile broadband networks that keep them in touch, informed, and productive from wherever they need to be. The Company offers a diverse product portfolio addressing enterprise, consumer, original equipment manufacturer, machine-to-machine, and specialized vertical industry markets, and provides professional services to customers requiring expertise in wireless design, integration, and carrier certification. With 2006 revenues of $221 million, Sierra Wireless (NASDAQ: SWIR – TSX: SW) is headquartered in Richmond, British Columbia, Canada with additional offices in Carlsbad and Hayward, California; London; and Hong Kong. For more information about Sierra Wireless, 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.