What kind of outcomes can be expected from using Passive Devices?

Passive devices for radon measurement are designed to collect data over a specific period without the need for external power sources or active mechanical components. The method generally employed by these devices involves sampling the radon over time; they capture the radon levels and allow for a time-weighted average result to be calculated at the end of the sampling period.

This means the results reflect an average concentration of radon over the duration of exposure, which is valuable for assessing long-term radon presence in a home or building. These passive devices typically can yield an average concentration that may be interpreted in terms of standard radon risk guidelines, providing useful data for homeowners and regulators alike.

In contrast, options that suggest real-time measurements or continuous logging of data do not align with the nature of passive devices, as these typically do not provide instant readings or ongoing data tracking. Furthermore, while it is true that some results can vary, passive devices are generally considered reliable within their intended application, making the assertion of highly variable and unreliable results less accurate for this context.