What is a mandatory component indicated on a system monitor label?

A mandatory component indicated on a system monitor label is instructions for interpreting monitor readings. This is crucial because individuals who interact with the monitor need to interpret the information it provides accurately. Proper understanding of the readings can inform the user of the radon levels present and facilitate timely decision-making regarding mitigation efforts.

Providing clear instructions helps ensure that anyone monitoring the system can quickly identify when radon levels are safe or when action is needed. This aspect of labeling is essential for safety and effective communication, as those operating the monitor may not have advanced training in interpreting the data. Ensuring that these instructions are part of the label promotes effective monitoring practices and enhances user understanding of the system's performance.

In contrast, while having a list of available technicians, a contact number for complaints, or a detailed system diagram could be beneficial for users, these elements do not directly assist in the immediate task of understanding the monitor readings and thus are not considered mandatory components in this context.