Arrhythmia Research Technology, Inc. and Cyalume Technologies, Inc. Announce Exclusive Multi-Year Supply Agreement.

FITCHBURG, Mass. -- Micron Products, Inc. ("Micron") a wholly owned subsidiary of Arrhythmia Research Technology, Inc. (the "Company") (AMEX: HRT) has entered into an exclusive seven-year supply agreement with Cyalume Technologies, Inc. ("Cyalume") of West Springfield, Massachusetts to produce metal and plastic resin components for it's MK281 MOD 0 and MOD 1 Ogive Assembly for use in 40mm High Velocity training munitions.

The agreement calls for Micron, through its divisions, to supply precision machined metal and thermoplastic injection molded components to Cyalume's West Springfield facility. Cyalume with Micron components completes final fabrication and assembly into training munitions for use by select U.S. and NATO forces. Cyalume supplies two versions, the MOD 0 and MOD 1, of 40mm high velocity training rounds that provide a visible, non-pyrotechnic impact signature to allow soldiers to see where they strike. When utilized in such platforms, the MK 19 and MK 47 belt fed automatic grenade launchers can fire up to 350 grenades per minute. The MOD 1 version also provides a chemiluminescent component that allows observation of the impact signature during night fighting. The impact signatures provided by both versions are visible to the gunner's naked eye. The training round is ballistically equivalent to the actual live round and provides an accurate training tool without the higher cost or danger of live fire practice rounds. The use of completely non-pyrotechnic training projectiles also eliminates the risk of range fires and unexploded training ordinance.

Initial deliveries of the new training ordinance have been made to NATO, the U.S. Marines and Special Forces. Cyalume expects that the non-pyrotechnic training rounds will gain universal acceptance with other military services in time and replace existing live 40mm training munitions.

James E. Rouse, the Company's President and CEO commented, "We are very pleased to have been chosen by Cyalume Technologies to supply two critical components in each of the MOD 0 and MOD 1 versions of the Ogive assembly. We have worked closely with Cyalume's engineers during the design and development phase and are excited about the potential growth of this product line. Micron is proud to be associated with Cyalume's vision and ability to adapt its patented light technology for this military application which is a significant step forward in reducing the risk of death and injury to military personnel during training."

About Cyalume Technologies, Inc.

On January 23, 2006, the Military and Safety Division of OmniGlow([R]) Corporation, located in West Springfield, Massachusetts, became Cyalume Technologies, Inc., a separate entity. Cyalume Technologies is the world leader in the chemiluminescent industry providing dependable light uses in emergencies such as blackouts, industrial accidents, acts of terrorism and natural disasters. Cyalume manufactures a full complement of Military grade Cyalume([R]) brand, Industrial grade SnapLight([R]) brand and Consumer grade SafetyBright([R]) brand emergency lighting solutions.

For more information please visit: http://www.cyalume.com http://www.cyalume.com/militaryusa.php

About Arrhythmia Research Technologies, Inc.

ART, through Micron, manufactures silver plated and non-silver plated conductive resin sensors and distributes metal snaps used in the manufacture of disposable ECG, EEG, EMS and TENS electrodes. Micron's NEM division manufactures custom injection molded products for medical, electronic, industrial and consumer applications. Micron's MIT division provides end-to-end product life cycle management through a comprehensive portfolio of value-added services such as design, engineering, prototyping, manufacturing, machining, assembly and packaging. Micron's Leominster Tool division provides high end mold design and manufacturing for the injection molding industry. The Company's products also include proprietary signal-averaging electrocardiography (SAECG) software used in the detection of potentially lethal hearth arrhythmias.

For more information please check our websites:

http://www.arthrt.com

http://www.micronproducts.com

http://www.leominstertool.com

http://www.newenglandmolders.com

http://www.micronintegrated.com

Note Regarding Forward Looking Statements

Forward-looking statements made herein are based on current expectations of the Company that involve a number of risks and uncertainties and should not be considered as guarantees of future performance. The factors that could cause actual results to differ materially include: interruptions or cancellation of existing contracts, impact of competitive products and pricing, product demand and market acceptance, risks, the presence of competitors with greater financial resources than the Company, product development and commercialization risks, changing economic conditions in developing countries, and an inability to arrange additional debt or equity financing. More information about factors that potentially could affect the Company's financial results is included in the Company's filings with the Securities and Exchange Commission, including its Annual Report on Form 10-KSB for the year ended December 31, 2006.