True or False: Most continuous radon monitors in the U.S. are active devices.

The statement in question is that most continuous radon monitors in the U.S. are active devices. The correct answer indicates that this statement is false because the majority of continuous radon monitors are indeed classified as active devices. Active devices are those that require a power source to operate; they continuously sample and analyze air for radon levels, providing real-time data.

While there are passive devices that collect radon samples over a specific period and then require laboratory analysis, in terms of continuous monitoring, active devices dominate the market. This distinction is crucial for radon measurement technicians to understand, as it directly impacts the reliability and accuracy of radon monitoring efforts. Utilizing active devices allows for ongoing monitoring, which is essential for assessing radon levels in residential and commercial buildings to ensure safety and compliance with health guidelines.