What is F 1 Certification?

Ultraviolet irradiation test. Ultraviolet resistance is divided into eight grades, and F 1 certification is a test of UL company. Marking F 1 on Huang Ka means that the product can be used outdoors for a long time!

UL 746C

（f 1）-

According to UL 746C standard, it is suitable for outdoor use exposed to ultraviolet light, water and immersion.

（f2）

Perform one or more of the following tests according to UL 746C: ultraviolet light, water exposure or immersion, where the acceptability of outdoor use is determined by UL.

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