<SEC-DOCUMENT>0000897101-18-000343-index.html : 20180402
<SEC-HEADER>0000897101-18-000343.hdr.sgml : 20180402
<ACCEPTANCE-DATETIME>20180402161108
ACCESSION NUMBER:		0000897101-18-000343
CONFORMED SUBMISSION TYPE:	NT 10-K
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20171231
FILED AS OF DATE:		20180402
DATE AS OF CHANGE:		20180402
EFFECTIVENESS DATE:		20180402

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COMMUNICATIONS SYSTEMS INC
		CENTRAL INDEX KEY:			0000022701
		STANDARD INDUSTRIAL CLASSIFICATION:	TELEPHONE & TELEGRAPH APPARATUS [3661]
		IRS NUMBER:				410957999
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		NT 10-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31588
		FILM NUMBER:		18728971

	BUSINESS ADDRESS:	
		STREET 1:		10900 RED CIRCLE DRIVE
		CITY:			MINNETONKA
		STATE:			MN
		ZIP:			55343
		BUSINESS PHONE:		9529961674

	MAIL ADDRESS:	
		STREET 1:		10900 RED CIRCLE DRIVE
		CITY:			MINNETONKA
		STATE:			MN
		ZIP:			55343
</SEC-HEADER>
<DOCUMENT>
<TYPE>NT 10-K
<SEQUENCE>1
<FILENAME>csi180822_nt10-k.htm
<TEXT>
Document 1 - file: csi180822_nt10-k.htm

</DOCUMENT>
</SEC-DOCUMENT>