> For the complete documentation index, see [llms.txt](https://help.aranet.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.aranet.com/aranet-rn+/aranet-radon-plus/general/what-does-the-aranet-rn+-do.md). # What Does the Aranet Rn+ Do? Provides real-time measurements of radon gas concentration, temperature, and relative humidity. With its portability and extended multi-year battery life, this device ensures convenience and reliability in continuous indoor air quality monitoring. #### What does Aranet Radon Plus measure? #### Radon Gas Radon gas is tasteless, odourless, and hard to detect, posing serious health risks. It escapes from the ground into the air and can accumulate in your home. According to the [World Health Organisation](https://www.who.int/news-room/fact-sheets/detail/radon-and-health), radon is one of the leading causes of lung cancer. Since its levels can fluctuate, regular radon monitoring is vital. Aranet Radon Plus sensor offers real-time radon monitoring. With wireless functionality and qualitative components, it ensures accurate measurements. The E-Ink display and long battery life make it ideal for continuous indoor air quality monitoring. #### Temperature and Relative Humidity (T/RH) Temperature and humidity are measured using a **precision digital sensor** that includes a tiny thermistor and a capacitive humidity element. The thermistor changes its electrical resistance with temperature, while the humidity element changes capacitance based on moisture in the air. The sensor converts these physical changes into digital readings, giving accurate T/RH measurements with minimal drift. #### Atmospheric Pressure (hPa) The Aranet Radon One includes a barometric pressure sensor, allowing you to correlate environmental conditions with radon levels and understand how ventilation or seasonal changes affect indoor radon concentrations. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://help.aranet.com/aranet-rn+/aranet-radon-plus/general/what-does-the-aranet-rn+-do.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.