Exhibit 99.1

For Immediate Release:

Communications Systems, Inc. Reports
First Quarter 2011 Results

Minnetonka, MN — May 9, 2011 — Communications Systems, Inc. (NASDAQ: JCS) today reported financial results for its first quarter ended March 31, 2011.

For the three months ended March 31, 2011, net income was $2,558,000, or $0.30 per diluted share, on sales of $31,023,000. In 2010, the Company earned $1,331,000, or $0.16 per diluted share, on sales of $25,882,000.

Jeffrey K. Berg, President and CEO, commented: “Our first quarter of 2011 was very strong with increases in both revenue and operating income over the prior quarter as well as an increase over Q1 2010. As the economy continues to strengthen we are well positioned to benefit from the recovery. We are also excited about another large booking for our Transition Networks business unit of $9.7 million dollars from an existing customer that is in addition to the $16.9 million dollar order announced March 25, 2011.”

Further information regarding the Company’s results and related matters is provided in the Company’s Form 10-Q report for the quarter ended March 31, 2011 that is being filed on or about May 10, 2011.

Cautionary Statement

From time to time, in reports filed with the Securities and Exchange Commission, in press releases, and in other communications to shareholders or the investing public, the Communications Systems Inc. may make forward-looking statements concerning possible or anticipated future financial performance, business activities or plans which are typically preceded by the words “believes,” “expects,” “anticipates,” “intends” or similar expressions. For these forward-looking statements, the Company claims the protection of the safe harbor for forward-looking statements contained in federal securities laws. Shareholders and the investing public should understand that these forward-looking statements are subject to risks and uncertainties, including those disclosed in our periodic filings with the SEC, which could cause actual performance, activities or plans after the date the statements are made to differ significantly from those indicated in the forward-looking statements when made.

About Communications Systems

Communications Systems, Inc. provides physical connectivity infrastructure and services for cost-effective broadband solutions and is a leading supplier of voice-grade connecting devices and wiring systems. CSI serves the broadband network market as the world’s leading supplier of media conversion technology, that permits networks to deploy fiber optic technology while retaining the copper-based infrastructure already embedded in the network. In addition, CSI supplies copper wire and fiber optic structured wiring systems for broadband networks, as well as line filters for digital subscriber line service. CSI also provides network design, training and management services.

CSI CONSOLIDATED SUMMARY OF EARNINGS

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