Form 10-K/A - Annual report [Section 13 and 15(d), not S-K Item 405]: [Amend]
SEC Accession No. 0000897101-20-000171
Filing Date
2020-03-17
Accepted
2020-03-17 17:11:29
Documents
93
Period of Report
2019-12-31

Document Format Files

Seq Description Document Type Size
1 FORM 10-K/A csi200445_10ka.htm 10-K/A 1613295
2 DESCRIPTION OF REGISTRANTS SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE S csi200445_ex4-1.htm EX-4.1 27472
3 SUBSIDIARIES OF THE REGISTRANT csi200445_ex21.htm EX-21 3738
4 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM csi200445_ex23-1.htm EX-23.1 2185
5 CERTIFICATION OF CHIEF EXECUTIVE OFFICER csi200445_ex31-1.htm EX-31.1 9193
6 CERTIFICATION OF CHIEF FINANCIAL OFFICER csi200445_ex31-2.htm EX-31.2 8962
7 CERTIFICATION UNDER USC SECTION 1350 csi200445_ex32.htm EX-32 3593
  Complete submission text file 0000897101-20-000171.txt   11232176

Data Files

Seq Description Document Type Size
8 XBRL INSTANCE FILE jcs-20191231.xml EX-101.INS 3311243
9 XBRL SCHEMA FILE jcs-20191231.xsd EX-101.SCH 60050
10 XBRL CALCULATION FILE jcs-20191231_cal.xml EX-101.CAL 104143
11 XBRL DEFINITION FILE jcs-20191231_def.xml EX-101.DEF 228913
12 XBRL LABEL FILE jcs-20191231_lab.xml EX-101.LAB 565123
13 XBRL PRESENTATION FILE jcs-20191231_pre.xml EX-101.PRE 486111
Mailing Address 10900 RED CIRCLE DRIVE MINNETONKA MN 55343
Business Address 10900 RED CIRCLE DRIVE MINNETONKA MN 55343 9529961674
COMMUNICATIONS SYSTEMS INC (Filer) CIK: 0000022701 (see all company filings)

EIN.: 410957999 | State of Incorp.: MN | Fiscal Year End: 1231
Type: 10-K/A | Act: 34 | File No.: 001-31588 | Film No.: 20721931
SIC: 3661 Telephone & Telegraph Apparatus