V-0 Vertical Burn Flammability Rating

To attain the UL94V-0 flammability standard — the best in the industry — a series of burn tests are conducted on electronic components.The V-0 vertical burn flammability rating occurs when the burning stops within 10 seconds after two flame applications are applied to a test bar, resulting in no flaming drips.

V-1 Vertical Burn Flammability Rating

To attain the UL94-V0 flammability standard a series of burn tests are conducted. The V-1 rating is the second-highest score for this test.

The V-1 burn rating occurs when the burn stops within a minute after a flame is held to a test bar for two applications that are ten seconds each with no drips.

V-2 Vertical Burn Flammability Rating

The UL94-V0 flammability standard is the highest in the industry for safety, and V-2 is the lowest rating in this series.

The V-2 vertical burn rating occurs when burning stops after 60 seconds when two flame tests are conducted, each for 10 seconds. Flaming drips are allowed.  

Visual Communication

Visual communication is the combination of color, icons and light cadence within an HMI or control panel that helps the end-user maintain safe operation. 

There are several best practices designers can implement to achieve safer, more intuitive visual language. Learn how in our Status Light Guide.

Visual Language

In status indicator design, visual language is the collective experience of elements that work together to communicate with the operator or end-user

Several elements can be used to create the visual communication of a device, such as LED color, number of indicators used, light patterns, icons, and numbers.