UL Mark
For UL Mark, meaning is tested and determined that a product meets UL specified product safety requirements; administered by is Underwriters Laboratories, verified against its source on 2026-08-11.
- Designation
- UL Mark verified
- Meaning
- tested and determined that a product meets UL specified product safety requirements verified
- Administered by
- Underwriters Laboratories verified
What the source says
UL Mark indicates that either Underwriters Laboratories or an equivalent nationally recognized testing laboratory (NRTL) has tested and determined that a product meets UL specified product safety requirements.
— belfuse.com, retrieved 2026-08-11
Source
- belfuse.comhttps://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks