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ProductsRadon monitors

Best plug-in radon monitors

Plug-in radon monitors that run continuously from an outlet, with no batteries to change, compared side by side.

Each monitor below runs from a wall outlet, according to its maker, so it can record continuously with no batteries to change.

8 results

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Every figure in one tableEach figure is the maker's own, as its product page or manual states it.

Home radon monitors (8)

Compare side by side
Home radon monitors (8)
ProductHow it measuresPowerScreen and appFirst readingC-NRPP 2024/25
Ecosense EcoBluPulsed ionization chamberPlug-inScreen onlyAfter 10 minutesNot included
Ecosense EcoQubePulsed ionization chamberPlug-inApp onlyAfter 10 minutesApproved
Ecosense RadonEye RD200Pulsed ionization chamberPlug-inScreen and appAfter 10 minutesApproved
GQ Electronics RadonProGQ Radon Gas Sensor (GQ's own name); sensor type and sampling method not stated by the maker. The separate Geiger counter counts radiation and is not the radon measurementPlug-inScreen and appAfter 5 minutesNot included
GQ Electronics RadonScanGQ Radon Gas Sensor (GQ's own name); sensor type and sampling method not stated by the makerPlug-inScreen onlyAfter 5 minutesNot included
GQ Electronics RadonScan-PlusGQ Radon Gas Sensor, described by GQ only as high-sensitivity; sensor type and sampling not stated by the makerPlug-inScreen and appAfter 5 minutesNot included
SafetySiren Pro4Diffused-junction photodiode sensor (250 V DC); samples the air passing through its ventilation slotsPlug-inScreen onlyAfter 48 hoursNot included
SunRADON lüftSolid-state radon sensor (absolute reading); sampling method not stated by the makerPlug-inApp onlyAfter 90 minutesApproved

Questions

Can I use a consumer radon monitor for a home sale?

For a home sale, most buyers, sellers and states rely on a short-term test placed by a qualified tester or a certified kit, run under closed-house conditions; a consumer monitor's reading is useful for your own home but is not usually accepted as the sale's test. Check your state's rules first.

Where should a radon monitor go?

EPA's guidance for any home test applies to a monitor too: test the lowest lived-in level, in a room used regularly but not a kitchen or bathroom, away from drafts, high heat and humidity.

What radon level should I act on?

EPA recommends fixing a home at or above 4 pCi/L and considering a fix between 2 and 4 pCi/L. A monitor's long-term average is the figure to compare with those levels, not a single day.

Further reading