RAE SYSTEMS’ WIRELESS SENSING SOLUTIONS PLAY KEY ROLE AT TOPOFF II TERRORIST DRILL

SUNNYVALE, Calif. – June 18, 2003 -RAE Systems, (OTC BB: RAEE.OB) a leading provider of hazardous environment detection solutions for homeland defense, today announced the successful demonstration of breakthrough technology used at the TOPOFF II terrorism drill that took place in Seattle in May, 2003. TOPOFF is the result of a Congressional mandate passed in 1998 that called for practice operations for a terrorist attack. Its main goals are to assess the nation’s crisis and consequence management capabilities under extremely stressful conditions and to identify areas that need more training and preparations to be ready for possible terrorist attacks.

RAE Systems proved that technologies now exist to move gas threat detection from a traditional “one-man-one-monitor” model to a wireless age “situational awareness” model that includes not only the local incident commander, but now can include remote high level coordinators and experts anywhere in the world. This data gives incident commanders a new tool to make informed life saving decisions about hazardous chemicals. At the TOPOFF II exercise, the Department of Homeland Security /FEMA software package Disaster Management Information System (DMIS) was used as the backbone to coordinate communications at a national hazardous material incident site. RAE Systems’ sensors, deployed around the site, added real time value by instantly transmitting GPS-based, hazardous environment data right into the maps and ortho-images displayed by the DMIS system.

“RAE Systems’ sensors demonstrated immediate value at the TOPOFF II exercise with the potential to save lives,” said Bob Durstenfeld, director of marketing at RAE Systems. “Command decisions involving deployment of personnel in Seattle, WA were able to be made in real time by DMIS coordinators back in Virginia.”

The AreaRAE gas monitors deployed at TOPOFF II are one-to-five sensor gas detectors equipped with a wireless RF data modem as designed to detect volatile organic compounds (VOCs), as well as Lower Explosive Limit (LEL) detection, Oxygen (O2 ) and up to two electrochemical toxic sensors for measuring specific toxic threats such as Ammonia (NH3), Chlorine (Cl), Carbon Monoxide (CO) or Hydrogen Sulfide (H2S). The AreaRAE’s wireless technology allows the unit to communicate and transmit readings and other information on a real-time basis with a remotely located base controller located up to two miles away. The AreaRAE tracks and displays readings from remotely located detectors on a GPS map, using the wireless communications link for two-way data and text communication between AreaRAE detectors and the base controller.

About RAE Systems
RAE Systems Inc. is the leader in rapidly deployable sensing networks for homeland defense and a leading manufacturer of portable, wireless and fixed atmospheric monitors, photo-ionization detectors, radiation detectors, gas detection tubes, sampling pumps and security monitoring devices. Our customers use our products to monitor gas and other volatile organic compounds in confined spaces, to establish a perimeter security around hazardous material sites and to detect the illicit traffic of radioactive materials. RAE Systems’ customers operate in such industries as safety and security, oil and gas, pharmaceuticals, utilities, food, chemical, airlines, military and hazardous material storage and disposal, and its monitors are used in civilian and government atmospheric monitoring programs in over 50 countries. For more information about RAE Systems, please visit www.RAESystems.com

Bob Durstenfeld
408-585-3534
bdurstenfeld@raesystems.com