RAE Systems Introduces Additional Wireless MeshGuard Monitors


o Methane "Lower Explosive Limit" and Sulfur Dioxide Monitors

o Company to Hold Wireless Strategy Webcast on Sept. 11

SAN JOSE, Calif. - September 9, 2009 -RAE Systems Inc. (NYSE AMEX: RAE), a leader in delivering innovative sensor solutions to serve industrial, energy, environmental, and government safety markets worldwide, today introduced three enhancements to its industry leading, MeshGuard, wireless, toxic-gas monitoring system. The MeshGuard family of toxic and flammable gas sensors used in environments where easy, rapid deployment means faster time to revenue. An investor and media webcast is planned for Friday, September 11, 2009 at 10:30 a.m. Pacific Time.

o The MeshGuard LEL provides flammability, or "lower explosive limit" monitoring for methane and other flammable drilling and oil and gas exploration gases.
o The MeshGuard Sulfur Dioxide (SO2) provides real-time detection for drilling and production sites where sulfur is a by-product.
o The PowerPak is a new high-capacity battery pack enables up to two-years operation of MeshGuard monitors on a single charge.

The MeshGuard family of sensors is designed for fast deployment in harsh and potentially hazardous locations, including oil and gas drilling operations, oil and gas production, plant maintenance turnarounds, storage tank facilities, shipyards and liquid storage terminals.

"The new MeshGuard LEL and SO2 join the hydrogen sulfide (H2S) and carbon monoxide (CO) MeshGuard monitors to enhance our wireless sensor offerings for this product family," said Bobby Sheikhan, wireless products manager for RAE Systems. "A key differentiator to our wireless sensors product line is the lower cost of deployment, particularly compared to cost associated with deploying fixed sensors used by many in the oil and gas industry. In addition, the new two-year PowerPak give field operations manager the longevity they need for an effective worker safety and equipment protection deployment."

The MeshGuard wireless sensors interface with the FMC 2000 Controller to provide a self-forming and self-healing wireless network that can reduce deployment time from days to hours. Each MeshGuard monitor's integral radio has a range of 300 meters (1,000 feet).

The MeshGuard monitors can be mounted magnetically or in protective stainless-steel housings., and each unit has both audible and visible (flashing light) alarm signals. The sensors are weather resistant with an IP 65 rating. All of monitors in the MeshGuard family meet intrinsic safety standards in the U.S., Canada (C1D1, Groups A, B,C, D, T4) and Europe (ATEX IM1/II iG Ex ia I/IIC T4), as well IECEx Ex ia I/IIC T4.

Wireless Strategy Webcast Access Instructions
The company will hold a Wireless StrategyWebcast on Friday, September 11, 2009 at 10:30 a.m. Pacific Time. To access the webcast, please pre-register at:
https://ww4.premconf.com/webrsvp/register?conf_ID=1226874

The pre-registration access code is 1226874. The dial-in numbers are: Toll Free: 888-576-4387 or 719-325-2116, with the passcode: 1226874 The webcast and slide download link is:
http://www.visualwebcaster.com/event.asp?id=61938

For more information on the MeshGuard family of toxic and flammable gas detectors, visit your authorized RAE Systems dealer or www.raesystems.com/products/fixed-detection-wireless.

For information on RAE Systems other personal, portable, handheld and wireless toxic gas and radiation monitors, please visit www.raesystems.com.

About RAE Systems

RAE Systems is a leading global provider of rapidly deployable sensor networks that enable customers to identify safety and security threats in real time. Products include disposable gas detection tubes, single gas personal monitors, multi-sensor chemical detection monitors, photoionization (PID) monitors for volatile organic compounds (VOCs), wireless gas detection
systems, and radiation monitoring networks for energy production and refining, industrial and environmental safety, and public and government first responder security sectors. RAE Systems' products are used in over 95 countries by many of the world's leading corporations and by many U.S. government agencies. For more information about RAE Systems, please visit
www.RAESystems.com.

Company Contacts:
Bob Durstenfeld
408-952-8402
bdurstenfeld@raesystems.com

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