Top 16 Electronics Manufacturers in Wisconsin 2026

Automation Components Inc

Middleton, Wisconsin200+ employees

Automation Components Inc (ACI) has been manufacturing building automation sensors in Middleton, Wisconsin, since 1991. The company employs over 200 people across four facilities in Middleton, where it engineers, designs, and produces its sensor lines.

Evertech

Cedarburg, Wisconsin

Evertech is based in Cedarburg, Wisconsin. The company was founded in 2022 by Michael Scherer, a biomedical engineering graduate from the University of Wisconsin–Madison.

JJISCO, INC

Oconomowoc, Wisconsin

JJISCO, Inc. has been supporting customer requirements from its headquarters in Oconomowoc, Wisconsin since 1998.

ASYST Automation

Kenosha, Wisconsin

ASYST Automation is based in Kenosha, Wisconsin. The company's founding year and ownership structure are not publicly disclosed in the provided materials.

LMI Manufacturing operates from a 40,000-square-foot facility in Hartford, Wisconsin. The company was founded in 1960 on a family farm in the Midwest by Lloyd Luedtke, who invented the Luedke Hay Mover/Hay Conditioner to reduce harvest time for local farmers.

Matrix Corporation was founded in 1999 in Menomonee Falls, Wisconsin, just outside Milwaukee. The company began as a PCB design provider and has since grown into a full-service contract electronics manufacturer serving OEMs and engineering teams across the Midwest.

P.A. Electronics Corporation operates from Hartland, Wisconsin, where it was founded in 1995 as a veteran-owned and operated business.

Uzelac Industries Inc.

Pewaukee, Wisconsin

Uzelac Industries was founded in 2003 by Michael Uzelac in Greendale, Wisconsin, after he acquired Poja Sheetmetal (established 1956) and later Duske Engineering (established 1980). The company designs and manufactures custom direct-fired rotary drying systems, each engineered to a customer’s specific process requirements.

ECM USA

Pleasant Prairie, Wisconsin

ECM USA operates from Pleasant Prairie, Wisconsin, positioned between Milwaukee and Chicago. The company serves as the American subsidiary of the France-based ECM Group, which consolidates thermal, gas, and atmosphere management expertise across multiple brands headquartered near Grenoble and Montpellier.

Oberlin Filter Company

Pewaukee, Wisconsin

Oberlin Filter Company is based in Pewaukee, Wisconsin. The company has over 60 years of proven experience in filtration technology, though a specific founding year and founder names are not publicly disclosed.