Reference Source

UL 539

What is the laboratory for UL 539?

For UL 539, laboratory is UL LLC; standard title is Single and Multiple Station Heat Detectors, verified against its source on 2026-09-17.

UL 539 | Single and Multiple Station Heat Detectors |

— osha.gov, retrieved 2026-08-10

Laboratory
UL LLC
Standard number
UL 539 verified
Standard title
Single and Multiple Station Heat Detectors verified
Sourceosha.gov
Verified
Review by
DatasetWhich OSHA NRTL is recognized for which test standard: all 21 labs' scopes of recognition, cross-referenced

Source

Last verified against source: . Due for re-check by . This page as Markdown · OKF bundle · full dataset as JSON.

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