Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000022701-22-000004
Filing Date
2022-03-14
Accepted
2022-03-14 16:08:08
Documents
91
Period of Report
2021-12-31

Document Format Files

Seq Description Document Type Size
1 10-K jcs-20211231x10k.htm   iXBRL 10-K 5343204
2 EX-21 jcs-20211231xex21.htm EX-21 8757
3 EX-23.1 jcs-20211231xex23_1.htm EX-23.1 2891
4 EX-31.1 jcs-20211231xex31_1.htm EX-31.1 19596
5 EX-31.2 jcs-20211231xex31_2.htm EX-31.2 18507
6 EX-32 jcs-20211231xex32.htm EX-32 11965
  Complete submission text file 0000022701-22-000004.txt   10958726

Data Files

Seq Description Document Type Size
7 EX-101.SCH jcs-20211231.xsd EX-101.SCH 62134
8 EX-101.CAL jcs-20211231_cal.xml EX-101.CAL 122137
9 EX-101.DEF jcs-20211231_def.xml EX-101.DEF 250875
10 EX-101.LAB jcs-20211231_lab.xml EX-101.LAB 604548
11 EX-101.PRE jcs-20211231_pre.xml EX-101.PRE 515245
85 EXTRACTED XBRL INSTANCE DOCUMENT jcs-20211231x10k_htm.xml XML 532094
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 | Act: 34 | File No.: 001-31588 | Film No.: 22736608
SIC: 3661 Telephone & Telegraph Apparatus