10.06.09

Editorial Contact:
Kim Miller
Tier One Partners
(617) 610-0583
kmiller@tieronepr.com

Minneapolis, MN — October 6, 2009 — Transition Networks Inc., the switching and conversion technology expert, a wholly owned subsidiary of Communications Systems, Inc. (NASDAQ-GM: JCS), today announced the availability of UL Class 1 Div 2 Certified media converters and switches as part of its industrial product portfolio. The addition of Class 1 Div 2 certification enables industrial customers to extend their network to end devices located in hazardous locations such as oil and gas refining and petrochemical manufacturing operations, among others.

Class 1 Div 2 rated equipment, under intended operating conditions, is incapable of igniting flammable gas or vapor-air mixtures. To ensure all standard requirements were met or exceeded, new products were independently tested by Underwriters Laboratory (UL). Transition’s new portfolio offerings include expanded industrial Ethernet media converters in both 10/100 and gigabit speeds, and industrial Ethernet switches, including a fully managed, all-Gigabit device. Designed to reliably operate in harsh networking environments found on factory floors, outdoor enclosures or other hazardous environments, all of Transition Networks’ industrial products are backed by an unsurpassed “Lifetime Warranty without the Fine Print” guarantee.

“Many of our customers in the oil and gas refining and petrochemical manufacturing industries want to extend their networks into plant operations that are often defined as hazardous locations,” said Patrick Schaber, Director of Marketing at Transition Networks. “By providing Class 1 Div 2 certification for many of our industrial products, we can deliver solutions that are durable and safe, better serving our customers. Now, Transition Networks makes it possible to manage industrial processes in nearly any type of plant environment.”

The newest additions to Transition’s industrial product portfolio include switches and media converters offered in an extended operating temperature range of -40°C to +75°C. The products also provide dual, redundant, auto-sensing 12 - 48VDC power inputs with reverse polarity power input protection and overload current protection, as well as relay contact output circuits for controlling external alarms. DIN-rail and wall mount brackets are included as standard.

Product Availability and Configuration
For more information on which Transition Industrial-grade products now carry Class 1 Div 2 certification, please contact your distributor or a Transition Networks representative directly.

Transition Networks can be reached at (800) 526-9267 or by visiting www.transition.com.

About Transition Networks Products
Transition Networks’ conversion products are known for their ruggedness and reliability. They have a 99.4 percent customer acceptance rating, meaning that approximately one in 1,000 experience failure in the field. All Transition Networks brand of media converters and switches carry a lifetime warranty.

About Transition Networks Inc.
Transition Networks Inc. offers networking connectivity solutions that make networks perform better, faster and more reliably while helping companies leverage their existing networking infrastructure. The company’s Transition Networks brand of media converters make conversion between disparate media types possible, providing conversion technology solutions that offer the necessary adaptations without affecting the performance, nature or appearance of the network. Its complete MILAN portfolio of multilayer switching products is designed to facilitate low-cost network evolution with unique solutions, easing the stress on networks caused by high-bandwidth applications. Based in Minneapolis, Transition Networks distributes hardware-based connectivity solutions exclusively through a network of resellers in 50 countries, including Ingram Micro and Tech Data. Transition Networks is a wholly owned subsidiary of Communications Systems, Inc., a publicly traded company (NASDAQ: JCS).

Statements regarding the Company's anticipated performance in 2009 are forward-looking and involve risks and uncertainties, including but not limited to: competitive products and other factors discussed from time to time in the Company's filings with the Securities and Exchange Commission.