[cyberax]

Why would you want a radon sensor in a product that does constant monitoring?

Radon concentration is not a transient state, and you need to measure it for a fairly long time to get a good idea of the true concentration.

[simondotau]

Doesn’t your second sentence adequately explain your first sentence? Something that does constant monitoring would surely be good at measuring for a “fairly long time”.

[cyberax]

I mean that you need to accumulate the readings for a long time because the specific activity is so low.