When should a yellow label be used?

A yellow label is designated for systems that do not meet applicable codes and standards. This signaling serves a crucial purpose in fire alarm systems. Specifically, it alerts users, maintenance personnel, and inspectors that the system has deficiencies that need to be addressed to ensure safety and compliance.

Using a yellow label emphasizes the necessity for immediate attention and remediation to bring the system up to code, which is essential for protecting lives and property in the event of a fire. It indicates that while the system may be operational, it does not conform to the required regulations and standards, and therefore, caution should be exercised in its current state.

In contrast, a system that meets all applicable codes would not warrant a yellow label since it aligns with safety standards; completion of installation or successful final inspection indicates compliance rather than deficiencies needing labeling.