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Hydro Electronic Devices, Inc.

2120 Constitution Avenue, Hartford, WI 53027

LIKELY ACTIVELAST SEEN IN FEDERAL DATA DEC 2025 · 1 SOURCE

Operating signal within 24 months, or from a single source.

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What they make

Relay and Industrial Control Manufacturing335314

Where it is

43.33370, -88.41801 · CENSUS TIGER
COUNTY
METRO AREA
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Other plants nearby

FacilityCityIndustryStatusDistance
Pa Electronics CORPHartlandPower, Distribution, and Specialty Transformer Manufacturing
335311
ACTIVE27.1 KM
Marlin Technologies, INC.HoriconOther Measuring and Controlling Device Manufacturing
334519
ACTIVE23.4 KM
Mectronx CORPOconomowocPrinted Circuit Assembly (Electronic Assembly) Manufacturing
334418
ACTIVE30.2 KM
Dynamic Ratings, INC.SussexInstrument Manufacturing for Measuring and Testing Electricity and Electrical Signals
334515
LIKELY ACTIVE27.6 KM
Sussex ManufacturingSussexMotor and Generator Manufacturing
335312
UNVERIFIED28.0 KM

Every listed plant in Washington County

Also at this address

No other federal record shares this street address.

WHERE THIS RECORD COMES FROM — 1 FEDERAL SOURCE, 2 FIELDS

Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.

SourceEvidenceFirst seenLast seen
OSHA ITAOPERATINGDEC 2025DEC 2025
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
FIELDSOURCESIGNAL
EMPLOYEE BANDOSHA ITADEC 2025
GEOMCENSUS GEOCODERJUL 2026

Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

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