NTS Tests The Telegesis ETRX2, The World’s First Module Certified Based on the Latest ZigBee WirelessTechnology

Culver City, CA – February 23, 2008 – National Technical Systems Inc. (NASDAQ: NTSC) (NTS), a leading provider of engineering services, announced today that is has successfully completed certification testing of Telegesis’ ETRX2. Telegesis’ product passed the testing requirements for the ZigBee Manufacturer Specific Profile (MSP) certification, as outlined by the ZigBee Alliance, making the Telegesis ETRX2 the world’s first module certified using the latest ZigBee Feature Set,

“NTS is pleased to see manufacturers such as Telegesis, bringing ZigBee products to the market so quickly, and having them officially certified to verify that they meet the standards developed by the ZigBee Alliance,” commented Osman Sakr, Chief Technology Officer of NTS. “We are looking  to test many additional products that will require the ZigBee Manufacturer Specific Profile (MSP) certification.”

NTS has years of experience testing the latest wireless technologies. As a member of the ZigBee Alliance, NTS has participated since inception in the development of the wireless certification program, which is governed by the ZigBee Alliance. NTS is not only able to perform the complete suite of wireless testing required by ZigBee, but has also developed a custom, vendor agnostic test application called ZigTest™ which simplifies the validation of the ZigBee MAC, ZCP and MSP test requirements.

About NTS

National Technical Systems, Inc. is a leading provider of engineering services to the defense, aerospace, telecommunications, automotive and high technology markets. Through a world-wide network of resources, NTS provides full product life-cycle support, offering world class design engineering, compliance, testing, certification, quality registration and program management. For additional information about NTS, visit our website at www.ntscorp.com or call 800-270-2516.

About Telegesis

Telegesis is a specialist provider of ZigBee module technology enabling companies to design in ZigBee PRO wireless capability without the need for specialist RF or embedded firmware capability. This reduces cost and risk for the design engineer whilst getting the wireless solution to market faster. Telegesis is a Participant Member of the ZigBee Alliance. Visit their website at www.telegesis.com.   About ZigBee: Wireless Control That Simply Works

The ZigBee Alliance is an association of companies working together to enable reliable, cost effective, low-power, wirelessly networked, monitoring and control products based on an open global standard. The ZigBee Alliance membership comprises technology providers and manufacturers worldwide. Membership is open to all. Additional information can be found at www.zigbee.org.

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"Safe Harbor" Statement under the Private Securities Litigation Reform Act of 1995: Statements in this press release regarding National Technical Systems' business which are not historical facts are "forward-looking statements" that involve risks and uncertainties. For a discussion of such risks and uncertainties, which could cause actual results to differ from those contained in the forward-looking statements, see "Risk Factors" in the Company's Annual Report or Form 10-K for the most recently ended fiscal year.