MobileGuardian(TM) Reaches Milestone

Stolen Vehicle Recovery and Location Tracking Solution Increases Market Availability through Nationwide Agreement

ATLANTA, July 21 -- Numerex Corp. , an industry leader in wireless data networks and machine-to-machine communications solutions, today announced that MobileGuardian LLC, a wholly- owned subsidiary of the Company, has signed agreements that provide point of sale in more than 400 automotive dealership locations nationwide for the purposes of distributing and selling MobileGuardian(TM) products and service. MobileGuardian(TM) provides the premier wireless stolen vehicle recovery and tracking solution.

This rapid growth in dealership availability is primarily the result of a recently signed agreement with one of the nation's largest retailers of both new and used vehicles in addition to agreements reached with numerous independent automotive dealerships throughout several states. The market initiative calls for a twelve state coast-to-coast rollout, expected to be completed by December 2003.

"Our MobileGuardian(TM) product launch is on target and is expected to provide Numerex top line growth in our core wireless business," said Stratton Nicolaides, chairman and chief executive officer, Numerex Corp. "We believe that our early success in securing over 400 dealership locations nationwide avails us the opportunity to enter several major US markets with an immediate market presence and competitive advantage. We believe that MobileGuardian(TM) offers a compelling value proposition to both the auto dealer and end-user providing a unique on-demand vehicle monitoring and recovery application. This unique solution is becoming an increasingly sought after option for the security-minded new car buyer. Our MobileGuardian(TM) solution provides reliable and timely location information in a crisis, as well as on-demand tracking capabilities for friends and family throughout their travels.

How MobileGuardian(TM) works

When a vehicle is stolen, the car's alarm system will trigger a message to the MobileGuardian(TM) device, which will then wirelessly transmit a theft alert notification message to the vehicle's owner via their wireless phone, email or pager. The owner can then simply log on to the secure MobileGuardian(TM) Web site with a unique login name and password and send an immediate locate request to the vehicle (via Numerex's data transmission device, GPS technologies, and the Cellemetry(R) network). Owners can then remotely disable the vehicle at the touch of a button, call authorities to report its location virtually anywhere in North America, and once recovered, re-enable the vehicle at the touch of a button. Users are also given the option to purchase additional "locates" to track their vehicle in times of non-emergency.

  MobileGuardian(TM) key features include:

  *  Nationwide wireless coverage via Numerex's Cellemetry(R) network
  *  Immediate theft alarm notification messaging sent to any email-enabled
     device
  *  On-demand location information
  *  Remotely enable and disable
  *  Secure Web interface for monitoring & reporting
  *  No monthly fees for the consumer

For more detailed product information and statistics, please visit http://www.mymobileguardian.com/ .

About MobileGuardian(TM)

MobileGuardian(TM) is a Web-based vehicle recovery and location solution like no other, as it provides ubiquitous coverage throughout all of North America, via Numerex's Cellemetry(R) network. In the event of vehicle theft, owners can receive notification via any email-enabled device, and can then locate their car through the secure MobileGuardian(TM) Web site by paging the vehicle to retrieve street level data. Users can then remotely disable the vehicle, preventing it from being re-started once turned off, and guide law enforcement authorities to its location.

About Cellemetry(R)

Cellemetry(R) provides two-way, wireless data connectivity for a variety of machine-to-machine communications that remotely monitor, measure, or track fixed and mobile assets. The Cellemetry(R) patented technology has been licensed to strategic partners and application developers providing a broad range of solutions widely available across North and South America.

About Numerex

Numerex is a technology company comprised of operating subsidiaries that develop and market a wide range of wireless and wireline communications products and services. The Company's primary focus is wireless data communications utilizing proprietary network technologies. Numerex primarily offers products and services in wireless data communications through Cellemetry(R) and Data1Source(TM), and digital multimedia through PowerPlay(TM). These services enable customers around the globe to monitor and move information for a variety of applications from home and business security to distance learning. In addition, the Company offers wireline alarm security products and services, as well as telecommunications network operational support systems. For more information on Numerex, please visit our Web site at: www.nmrx.com .

Statements contained in this press release concerning Numerex that are not historical fact are "forward-looking" statements and involve important risks and uncertainties. Such risks and uncertainties, which are detailed in Numerex's filings with the Securities and Exchange Commission, could cause Numerex's results to differ materially from current expectations as expressed in this press release.