Radon is a natural radioactive gas that seeps out of the ground, particularly in areas with granite and some other rocks. It cannot be seen or smelled, and indoors it can build up to levels that raise the risk of lung cancer, especially in basements and ground-floor rooms. Concentrations are measured in becquerels per cubic metre (Bq/m³), and many countries set action or reference levels for homes and workplaces.
LoRaWAN radon sensors measure radon continuously and send their readings over long-range, low-power radio. Battery-powered models can be placed exactly where radon collects, without power or network cabling, and a single gateway can cover a whole building or estate.
Common deployments include:
- Landlords and housing providers monitoring homes in radon-affected areas
- Employers assessing radon exposure in workplaces and basements
- Schools and public buildings, and checking remediation such as sumps and ventilation
When comparing options, weigh measurement accuracy, battery life or power needs, the regional frequency plan, and whether a documented payload codec is supplied so radon readings decode correctly in your application.
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Frequently asked questions
How do LoRaWAN radon sensors measure radon?
Most let air diffuse into a measuring chamber and detect the alpha particles given off as radon and its decay products break down, using a solid-state detector or an ionisation chamber. The device averages counts over time to give a concentration in becquerels per cubic metre (Bq/m³) and sends it over LoRaWAN.
Why monitor radon continuously instead of with a passive detector?
A passive detector gives one average figure after a test of around three months. A continuous LoRaWAN radon sensor shows how levels change hour by hour, for example overnight peaks or the effect of heating and ventilation, confirms quickly whether remediation has worked, and can raise an alert when a threshold such as an action level is passed.
What should I compare when choosing a radon sensor?
Check measurement method and accuracy at typical action levels, how long it needs to settle on a reading, whether it runs on battery or mains power and for how long, the supported LoRaWAN frequency plan, and whether a payload decoder is provided so radon values arrive ready to use in your platform.