Looking for something else?

Head over to an area that fits your interest and learn more about air quality and the products we offer.


For home


For business


For pro


Corentium Home

The top rated and best selling digital radon detector on the market. Easily monitor radon levels in your home with this compact yet powerful radon gas detector. 

Free shipping

12-month warranty

45 day money back guarantee



Best-selling digital radon detector

The first of its kind and best-selling digital radon detector.


On-screen results

On-screen results show both long and short-term readings for a quick overview of your radon levels.


Battery operated

Battery operated and portable so you can take multiple measurements.


Continuous monitoring

Protect your family from the second leading cause of lung cancer with continuous monitoring.


Results in 24 hours

Unlike traditional radon gas test kits, receive your first indication in 24 hours and no lab fees.


Easy reporting

Easily generate a radon self-inspection report to record your measurements.

Monitoring matters

Illustrative icons_Calendar_Long term
Illustrative icons_Calendar_Short term
Illustrative icons_Calendar_Long term

Long-term average

Understand trends, see radon fluctuations and your overall exposure.

Illustrative icons_Calendar_Short term

Short-term average

Observe your daily radon fluctuations and take action when necessary.

What is Radon?

Radon is an invisible gas formed in the Earth’s crust. It surrounds every one of us as part of the air we breathe. The number one cause of lung cancer among non-smokers, radon is an odorless gas found in all buildings and homes.


Free shipping


45-day money back guarantee


12-month warranty

Tech Specs

Power supply:
3 x AAA alkaline batteries (LR03)
2 years battery life

Dimensions: 4.7 x 2.7 x 1.0 inches / 120mm × 69mm × 25.5mm

Weight: 5.2 ounces / 130g (with batteries)

Operation environment:
Temperature: 39°F to 104°F / 4°C to 40°C
Relative Humidity: < 85%

Radon sampling: Passive diffusion chamber

Detection method: Alpha spectrometry

Measurement range: 
0 – 500 pCi/L
0 - 9999 Bq/m³

Accuracy/precision at 5.4 pCi/L / 200 Bq/m3:
After 7 days ~ 10 %
After 2 months ~ 5%


US Model 223 / EUR Model 244

Package content:
Radon detector
3 x AAA alkaline batteries (LR03)
User manual