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Insignia Systems, Inc.https://pcaobus.org/form-ap-filings/52101/52101Insignia Systems, Inc.521013/18/2020 12:07:56 PM20191f1d5b95-5858-4d01-9a75-2f76428bb8a323Baker Tilly Virchow Krause, LLP42911Insignia Systems, Inc.875355ISIG0002300051Matthew Leigh Tredinnick0002300051True
Communications Systems, Inc.https://pcaobus.org/form-ap-filings/35495/35495Communications Systems, Inc.354953/18/2019 4:51:44 PM201886f45b38-37c7-47a0-b29c-efd7d1836f3223Baker Tilly Virchow Krause, LLP2081Communications Systems, Inc.22701JCS0002300051Matthew Leigh Tredinnick0002300051True
Communications Systems, Inc.https://pcaobus.org/form-ap-filings/22338/22338Communications Systems, Inc.223384/11/2018 5:06:49 PM20170f809d10-4f08-4e5b-bcc9-a4f18704a41623Baker Tilly Virchow Krause, LLP2081Communications Systems, Inc.22701JCS0002300051Matthew Leigh Tredinnick0002300051True