# Performance Evaluation of AlphaSensor Radon Modules Under Real-World Conditions

## TL;DR

This study evaluates the performance of AlphaSensor radon detectors under real-world conditions and finds them reliable and suitable for home use.

## Contribution

The study introduces individual calibration factors and confirms the reliability of AlphaSensor modules for real-world radon monitoring.

## Key findings

- AlphaSensor units showed 10% or lower uncertainty compared to the reference AlphaGUARD device.
- AlphaSensors are suitable for home use and can be used in large-scale scientific monitoring networks with minor hardware additions.

## Abstract

This study compares a set of 43 AlphaSensor units produced by RadonTec GmbH, Wittislingen, Germany against the AlphaGUARD 1000PF (Bertin Technologies, Montigny-le-Bretonneux, France), which is used as a reference monitor. During this study, around 16 k integrated measurements were conducted. The concentration range varied between 10 and 20 k Bq/m3. Multiple key performance indicators, such as sensitivity, uncertainty, background, linearity, and temporal response, were evaluated using a variety of statistical approaches. The results confirm the manufacturer’s claim of 10% or lower uncertainty in comparison with AlphaGUARD. We tentatively suggest individual calibration factors and methodologies. Our conclusion is that the AlphaSensor and commercial devices based on it, such as AlphaTracer, are affordable and applicable for home use. With modest additional hardware, AlphaSensors are also a good option for scientific studies involving the deployment of large monitoring networks.