NTG Headline News

• Elecsys Corporation's NTG Subsidiary Appoints Hockway International as Distribution Partner in Middle East
• Numerex Goes Underground to Help NTG Stay on Top
• NTG Announces New Pipeline Watchdog Product Line Sales
• NTG, Inc. Announces Acquisition Agreement with AMC, Inc.
• NTG Moves Into New Production Facility

NTG Announces New Pipeline Watchdog Product Line Sales

Olathe, Kansas (May 11, 2007) - Elecsys Corporation (AMEX: ASY) announced today that its NTG, Inc. subsidiary received over $800,000 in orders from multiple customers during April for its new Pipeline Watchdog wireless remote monitoring system. The new system, introduced at the international NACE Corrosion 2007 Expo in March, features small, wireless 'mesh' sensors that simplify installation and dramatically reduce the possibility of lightning damage. The system transmits data to NTG's secure WatchdogCP Web Monitor website via either the worldwide standard GSM cellular network or the Inmarsat D+ satellite network where it can be accessed by customers over the Internet. These communications technologies enable the NTG Pipeline Watchdog remote monitoring system to be deployed anywhere in the world.

Mike Reed, President of NTG, Inc. stated "The market reception to the Pipeline Watchdog system has exceeded our expectations. Customers are attracted to its approach to lightning and surge isolation, its ease of deployment, and its ability to monitor other pipeline parameters by simply deploying additional wireless 'mesh' sensors. Additionally, our ability to deliver systems worldwide is attracting broader market interest."