HEI, Inc. To Announce Third Quarter Fiscal 2006 Results

MINNEAPOLIS, June 19 /PRNewswire-FirstCall/ -- HEI, Inc. ( http://www.heii.com ) will hold its quarterly conference call to discuss the financial results of the third quarter of fiscal year 2006 on Thursday June 22, at 10:00 am Eastern time (9:00 am Central time).

This call is being web cast and is also accessible via telephone. To access the listen-only web cast, visit http://www.actioncast.acttel.com and enter Event ID 34390. The conference call can be accessed via telephone by dialing 1-800-240-5318 (outside the US, dial 303-262-2131). Specify conference reservation number 11064346.

Replays of the conference call will be available June 22, 2006 at 12 pm Central time through 11:59 pm July 22, 2006, by calling 1-800-405-2236 (outside the US, dial 303-590-3000). Specify conference reservation number 11064346.

Information for accessing the conference call is also available on the HEI’s web site at http://www.heii.com .

HEI, Inc. designs, develops and manufactures microelectronics, subsystems, systems, connectivity and software solutions for OEMs engaged in the medical equipment and medical device, hearing, communications, and industrial markets. HEI provides its customers with a single point of contact that can take an idea from inception to a fully functional, cost effective and manufacturability product utilizing innovative design solutions and by the application of state-of-the-art materials, processes and manufacturing capabilities.

Headquarters & Microelectronics Division PO Box 5000, 1495 Steiger Lake Lane, Victoria, MN 55386 -Advanced Medical Division 4801 North 63rd Street, Boulder CO 80301 -High Density Interconnect Division 610 South Rockford Drive, Tempe, AZ 85281 RF Identification and Smart Card Division 1546 Lake Drive West, Chanhassen, MN 55317 FORWARD LOOKING INFORMATION

Information in this news release, which is not historical, includes forward-looking statements made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Such statements in this press release include statements regarding the implementation of business strategies, growth of specific markets, potential sales and revenue figures and operational expectations. All of such forward-looking statements involve risks and uncertainties including, without limitation, continuing adverse business and market conditions, the ability of HEI to secure and satisfy customers, the availability and cost of materials from HEI’s suppliers, our ability to satisfy financial or other obligations or covenants set forth in our banking agreements, adverse competitive developments, change in or cancellation of customer requirements, collection of outstanding debt and receivables, and other risks detailed from time to time in HEI’s SEC filings. We undertake no obligation to update these statements to reflect ensuing events or circumstances, or subsequent actual results.

HEI, Inc.

CONTACT: Mack V. Traynor, CEO, or Timothy Clayton, CFO, both of HEI, Inc.,+1-952-443-2500

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