RAE Systems Selected by Central U.S. National Medical Response Team

SUNNYVALE, Calif. February 23, 2004 RAE Systems Inc. (AMEX: RAE), a leading global developer and manufacturer of rapidly-deployable, multi-sensor chemical and radiation detection monitors and networks for homeland security and industrial applications, today announced that it has been selected to supply wide area toxic gas detection, decontamination, perimeter monitoring, indoor air quality and security screening equipment by the Central U.S. National Medical Response Team.

The Department of Homeland Security, through its National Disaster Medical System, developed medical response teams to provide medical care to areas where local emergency medical response (EMS) and medical systems are overwhelmed due to natural or man-made disasters. The Central U.S. Medical Response Team, based in Colorado, can be rapidly deployed around the U.S. It is a specialized force designed to provide medical care following nuclear, biological and chemical incidents. The unit is capable of providing mass casualty decontamination, medical triage, and primary and secondary care in a HazMat environment to stabilize victims for transport to tertiary care facilities.

Since almost all WMD incidents occur or begin at the local level, rapid response is critical, said Phil Currance, Deputy Commander of the Central U.S. National Medical Response Team for Weapons of Mass Destruction. We chose AreaRAEs because of their ruggedness, sensitivity and wireless capabilities. They will be deployed to monitor the air quality in our field hospital tents and to establish fence line monitoring around secured triage and care areas.

RAE Systems line of AreaRAE monitors enables a wirelessly networked system of units to communicate on a real-time basis with mobile incident commanders or remotely located tactical experts. The AreaRAE-Gamma, AreaRAE IAQ and AreaRAE GPS are widely accepted as the de facto choice of many first responders and public safety organizations around the country in their respective product categories.

The brave men and women of our national medical response teams put themselves in harms way to help the victims of disasters, and we are proud to support them, said Robert I. Chen, CEO of RAE Systems. In the chaotic hours after a disaster, the NMRT personnel must be completely focused on their mission, and the AreaRAE solutions provide them peace of mind that the environment theyre working in is safe.

About RAE Systems
RAE Systems is a leading global developer and manufacturer of rapidly-deployable, multi-sensor chemical detection monitors and networks for homeland security and industrial applications. In addition, RAE Systems offers a full line of portable single-sensor chemical and radiation detection products. RAE Systems products enable the military and first responders such as firefighters, law enforcement and other emergency management personnel to detect and provide early warning of weapons of mass destruction and other hazardous materials. Industrial applications include the detection of toxic industrial chemicals, volatile organic compounds and petrochemicals. RAE Systems products are used by many U.S. government agencies, including the Department of Homeland Security, the Department of Justice, and the Department of State, as well as all branches of the U.S. military, and by numerous city and state agencies. Our end users also include many of the worlds leading corporations in the airline, automotive, computer and oil industries. Our products are used in civilian and government atmospheric monitoring programs in over 50 countries. For more information about RAE Systems, please visit www.RAESystems.com

Safe Harbor Statement
This press release contains “forward- looking” statements, as that term is used in Section 21E of the Securities Exchange Act of 1934. Forward-looking statements are denoted by such words as will be deployed. These types of statements address matters that are subject to risks and uncertainties, which could cause actual results to differ materially. Factors that could cause or contribute to such differences include, but are not limited to, the general economic and industry factors and receptiveness of the market to RAE and its products. In addition, our forward- looking statements should be considered in the context of other risk factors discussed in our filings with the Securities and Exchange Commission, including but not limited to our annual report on Form 10-K and 10-Q filings, available online at http://www.sec.gov. All forward-looking statements are based on information available to the company on the date hereof, and the company assumes no obligation to update such statements.