RAE Systems Launches Online Availability of Sensors, Accessories and Gas Detection Tubes

SUNNYVALE, Calif. February 22, 2005 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 the company has launched an online store, RAE MarketPlace US, offering a range of accessories and consumable items including calibration gases, sensors and filters, as well as single-use tubes for gas detection, separation, and humidity filtering.

We launched RAE MarketPlace US in direct response to the requests of our customers to make availability of these high demand items faster and easier, said Rudy Mui, vice president of marketing for RAE Systems. Now that these accessories are available online, our customers can use this streamlined process to more efficiently get the items that are essential to the effective operation of RAE Systems equipment.

The RAE Systems eCommerce program, RAE MarketPlace US, delivers the complete range of RAE Systems product accessories and consumable items at http://ecommerce.raesystems.com, either from the online store link on the left hand sidebar of the front page. The online store is simple and easy to use and enables customers to shop when its convenient for them. RAE MarketPlace US requires no minimum order. Since orders go directly to the factory, they can be processed, fulfilled and shipped faster than purchasing through a third party. However, customers still have the option to purchase through their local distributor if they prefer.

The eCommerce program is for U.S. orders only, and payment can be made with American Express, Discover, MasterCard or Visa. The purchaser can specify shipment options including overnight air, 2nd day, or ground delivery speed.

The eCommerce program, RAE MarketPlace US is available immediately on the RAE Systems web site. For further details, please visit the web site, call 1-877-723-2878 or e-mail raesales@raesystems.com.

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 expected to increase. 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 Form 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.