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RAE Systems Expands Offering of Personal Radiation Detectors for First Responders with GammaRAE II Responder

First Intrinsically Safe Radiation Detector and Dosimeter in One

SAN JOSE, Cal. – 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 introduced the GammaRAE II Responder, an addition to its personal radiation detector (PRD) product line. The first intrinsically safe combined radiation detector and radiation dosimeter, the GammaRAE II Responder features two sensors in a single instrument. Its fast-reacting Cesium Iodide sensor detects gamma radiation at extremely low levels and quickly alerts first responders to the presence of radioactive material and aids in intercepting illicit “dirty bomb” material. Its second sensor, an energy-compensated PIN diode, provides high dose rate range coverage and accurate dosimetry measurements.

Designed as a front-line security and first response device, the GammaRAE II Responder provides life-critical, real-time detection of hidden radiation sources and delivers instantaneous feedback to law enforcement, border checkpoint personnel, HazMat teams, firefighters and cargo port screeners, all while tracking their radiation exposure.

“This is the world’s first intrinsically safe Radiation Detector and Radiation Dosimeter in one immersible, rugged unit,” said Thomas Negre, director of instrumentation products at RAE Systems. “The GammaRAE II Responder now gives first responders the equivalent of both a radiation ‘speedometer’ and ‘odometer’ in a compact belt-size unit with multi-mode audio, vibration, and flashing LED alarms.”

Being certified intrinsically safe for Class 1, Division 1, Groups A, B, C, and D means that the GammaRAE II Responder will not initiate an explosion in environments where flammable gases, vapors or liquids are present. This is important for responding to incidents at chemical and industrial facilities, as well as other locations where these chemicals might be used or stored. Intrinsic safety certification is critical for first responders, HazMat teams, firefighters, and law enforcement, and the GammaRAE family includes the only personal radiation detectors on the market with this certification from both UL (US) and ATEX (Europe).

The GammaRAE II Responder is designed for use in rough environments. It is immersible (IP67) in water for easy decontamination, and a concussion-proof case provides shock protection if the detector is dropped. The two-button operation is designed for use even in Level A protection suits with two layers of gloves.

The GammaRAE II Responder features a fast, two-second response time. This is critical when searching for a radioactive source. The instrument also has multiple alarm modes with bright flashing LEDs and loud audible and vibration alerts. Alarm modes can be set to operate in “Search Mode,” based on local background radiation levels, or “Safety Mode,” providing high and low alarm levels based on absolute dose rates. The GammaRAE II Responder records readings and alarm information in a 30,000-point datalog, which can be downloaded via Bluetooth® radio to a computer using the included software.

The GammaRAE II Responder will be available August 1, 2006, for $1,195.00. Instruments can be ordered from any RAE Systems Distributor. For more information, refer to the datasheet at, e-mail or call 1-877-723-2878.

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 world’s 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

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This press release may contain “forward-looking” statements, as that term is used in Section 21E of the Securities Exchange Act of 1934. Forward-looking statements include, without limitation: expressions of “belief,” “anticipation,” or “expectations” of management and statements regarding the Company and it products. Each of these forward-looking statements is subject to risks and uncertainties and readers are cautioned that these forward-looking statements are only predictions and may differ materially from actual future events or results due to a variety of factors. In addition, our forward-looking statements should be considered in the context of the 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 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.