refers to its , indicating the board material is self-extinguishing within 10 seconds. It is not a unique model number; all official CM4 modules carry this safety certification.

A typical CM4 boardview will show:

The rating is achieved via a vertical burn test, which is more stringent than horizontal tests because it simulates how real fires spread upward.

A is a specialized file (often in .brd , .bdv , or .tvw formats) that provides an interactive map of a printed circuit board. Unlike a standard schematic, which shows logical connections, a boardview shows: