Reference Source

UL 1971

For UL 1971, laboratory is FM Approvals; standard title is Signaling Devices for the Hearing Impaired, verified against its source on 2026-08-10.

Laboratory
FM Approvals verified
Standard number
UL 1971 verified
Standard title
Signaling Devices for the Hearing Impaired verified
Sourceosha.gov
Verified
Review by
DatasetWhich OSHA NRTL is recognized for which test standard: all 21 labs' scopes of recognition, cross-referenced

What the source says

UL 1971 | Signaling Devices for the Hearing Impaired |

— osha.gov, retrieved 2026-08-10

Source

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