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X-Sense

X-Sense XR0A-iR

Wi-Fi battery radon detector with a screen

  • Monitor
  • Battery
  • Screen and app
  • Wi-Fi
  • First reading in 24 hours
C-NRPP 2024/25 evaluation: Not includedSee the evidence

Best for, and skip if

Best for you if

  • You want radon readings and alerts on your phone without a hub.
  • You want a battery detector you can reset and move from room to room.

Skip it if

  • You want a device that was itself graded in C-NRPP's 2024/25 evaluation.
  • You want it to work with an X-Sense SBS50 base station; X-Sense marks it as incompatible.
See how it compares: Best radon monitors, every model comparedWho it fits
  • X-Sense XR0A-iR
  • X-Sense XR0A-iR, photo 2 of 4
  • X-Sense XR0A-iR, photo 3 of 4
  • X-Sense XR0A-iR, photo 4 of 4

Photos: X-Sense

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  • PowerBattery
  • ReadingsScreen and app
  • First reading24 hours
  • C-NRPP 2024/25Not included
  • Every figure checked against the specifications X-Sense publishes
  • Independent test results shown the same way for every product, unranked
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About this item

As X-Sense states it

  • How it measures: Continuous alpha spectrometry, passive diffusion chamber
  • First reading: Within 24 hours
  • Display and app: Built-in display, phone app, Wi-Fi
  • Power: Battery: 3 AA alkaline batteries (1.5 V), replaceable; battery life 2 years

The XR0A-iR is X-Sense's Wi-Fi radon detector: the same passive diffusion chamber and continuous alpha spectrometry X-Sense lists for its other radon detectors, a digital display, three AA batteries, and remote readings and alerts in the X-SENSE Home Security app. It was not included in C-NRPP's 2024/25 evaluation.

What you get

X-Sense sells it as a 1-pack on its US store and lists the power supply as three replaceable 1.5 V AA alkaline batteries, with a warranty period of 5 years and a 30-day money-back guarantee. The app is X-Sense's own X-SENSE Home Security app.

In the box and running costs

How it works

What it measures and how

The sensor, the sampling and the readings, then who has checked it

How it works

In our words, from the maker's documents

X-Sense lists the sampling method as a passive diffusion chamber and the measurement method as continuous alpha spectrometry. Air drifts into the chamber without a fan or pump, and the sensor counts the alpha particles given off as radon and its decay products break down. X-Sense rates the sensor's sensitivity at 1.25 counts per hour for each pCi/L, or for each 37 Bq/m³.

A low count rate is why a first number takes time. X-Sense lists detection results within 24 hours, so plan on a day before the first figure means much, and on longer before you lean on an average. Like X-Sense's other radon detectors, it shows several short-term and long-term averages rather than one reading, and has a one-button reset for moving it from room to room.

What sets it apart is the connection. X-Sense says the XR0A-iR joins the X-SENSE Home Security app over Wi-Fi, for remote access to the readings and app notifications when you are away from it, while the digital display shows the current reading on the device. Its page points to the app for checking trends in detail.

X-Sense lists a detection range of 0 to 500 pCi/L, or 0 to 9,999 Bq/m³. The detector also reads temperature, from 14 to 122°F, and humidity, from 0 to 100%, which X-Sense rates to within 0.9°F and 5% relative humidity. It is a standalone Wi-Fi device: X-Sense marks it as incompatible with its SBS50 base station.

X-Sense's description frames it as a continuous monitor for following radon over time in bedrooms, living areas and basements, so changes show up and you can judge when further investigation or action may be appropriate, rather than relying on occasional manual testing.

What the manufacturer says

X-Sense's own statements, attributed

  • X-Sense saysX-Sense states detection results within 24 hours.
  • X-Sense saysX-Sense states a detection range of 0 to 500 pCi/L, or 0 to 9,999 Bq/m³.
  • X-Sense saysX-Sense states a battery life of 2 years on three replaceable 1.5 V AA alkaline batteries.
  • X-Sense saysX-Sense states a warranty period of 5 years.
  • X-Sense saysX-Sense says the detector connects over Wi-Fi to the X-SENSE Home Security app for remote access and app notifications.

These are X-Sense's own statements, attributed to it. They are not our findings, and we have not tested this product ourselves.

Independent evidence

C-NRPP 2024/25, recalls and studies

C-NRPP 2024/25
Not included in C-NRPP's 2024/25 evaluation

The Canadian National Radon Proficiency Program's 2024/25 comparison of consumer monitors did not include X-Sense XR0A-iR. That is a fact about which devices took part, not a finding about this one: no result from that program exists for it either way.

Recalls
No Health Canada recall or advisory names this device.
Peer-reviewed studies
We found no peer-reviewed comparison that names this model.
Notes
  • A Wi-Fi model X-Sense listed on its US store in 2026, after C-NRPP's 2024/25 evaluation was published; C-NRPP's page did not list it when checked on 2026-10-06.

C-NRPP is the Canadian National Radon Proficiency Program. Its 2024/25 results were published in May 2025.

X-Sense XR0A-iR

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Specifications

Specifications

Every figure as the maker states it

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The maker's figures

Type
Continuous monitor, battery, display and Wi-Fi app, alpha spectrometry
How it measures
Continuous alpha spectrometry, passive diffusion chamber
First reading
Within 24 hours
Reading updates
Not stated by the manufacturer
Display and app
Built-in display, phone app, Wi-Fi
Power
Battery: 3 AA alkaline batteries (1.5 V), replaceable; battery life 2 years
Units
Not stated by the manufacturer

What is in the box

X-Sense sells it as a 1-pack on its US store and lists the power supply as three replaceable 1.5 V AA alkaline batteries, with a warranty period of 5 years and a 30-day money-back guarantee. The app is X-Sense's own X-SENSE Home Security app.

What it costs to run

There is no lab fee and no hub to buy. The running cost is three AA alkaline batteries, which X-Sense rates for 2 years, plus the home Wi-Fi network the app connection relies on. Because it is a standalone Wi-Fi device, there is no base station to add for it to work.

Fit and setup

Who it fits, and how to use it

The fit, then setup and placement as the guidance asks

Who it fits

Good fit if, and look elsewhere if

Good fit if

  • You want radon readings and alerts on your phone without a hub.
  • You want a battery detector you can reset and move from room to room.
  • You want a sensor of the alpha spectrometry kind that counts radon continuously.
  • You want temperature and humidity alongside radon.

Look elsewhere if

  • You want a device that was itself graded in C-NRPP's 2024/25 evaluation.
  • You want it to work with an X-Sense SBS50 base station; X-Sense marks it as incompatible.
  • You want a number within minutes; X-Sense lists results within 24 hours.
  • You need a result for a home sale; check what your state accepts before relying on any consumer detector.

Setup and placement

4 steps

  1. X-Sense's description says to place it indoors where you want to monitor, connect it to Wi-Fi and the X-SENSE app, and let it monitor continuously, with readings on its screen. Its page includes a placement guide. The detector runs on three replaceable AA batteries, so it needs no outlet near where you put it.
  2. The EPA's general placement guidance applies to any radon test: the lowest lived-in level of the home, a room used regularly but not the kitchen or bathroom, at least 20 inches above the floor, and away from drafts, high heat, high humidity and exterior walls.
  3. To compare rooms, use the one-button reset each time you move it and let it run again for a similar stretch, so each room's averages cover comparable time. Note each room's averages before you reset, so you have a record to compare.
  4. For a decision about fixing your home, C-NRPP's advice for any consumer monitor is to place it in a room occupied at least 4 hours a day, test for a minimum of 3 months, preferably in the heating season, and decide on the long-term average. With less than 91 days of data, it recommends a follow-up long-term test. The EPA's guidance is to fix a home at 4 pCi/L or more and to consider fixing between 2 and 4 pCi/L.

How C-NRPP says to use any consumer monitor

  • Leave it in place for at least three months, ideally through the heating season, when indoor radon tends to be highest.
  • Put it in a room someone uses for at least four hours a day.
  • Decide about fixing your home from the long-term average, not a single day or week.
  • If you can only run a monitor for less than 91 days, follow up with a long-term test.

For where any radon test or monitor should sit in a home, see where to place a radon test.

Compare

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Questions

Questions people ask

6 questions about the X-Sense XR0A-iR, answered

Asked about the XR0A-iR

How long does the XR0A-iR take to give a reading?

X-Sense lists detection results within 24 hours. As with any alpha spectrometry detector, a week or more of averages says more than the first figure, and C-NRPP's advice for a decision is three months.

What is the difference between the XR0A-iR and the XR0A-SR?

X-Sense lists the same sampling method, measurement method, sensitivity, range and AA batteries for both. The XR0A-iR adds Wi-Fi, the X-SENSE Home Security app with app notifications, and temperature and humidity readings; the XR0A-SR is standalone, with its readings on its own screen.

Does the XR0A-iR need the X-Sense base station?

No. X-Sense marks it as incompatible with the SBS50 base station; it connects to the app over your home Wi-Fi.

Is the XR0A-iR C-NRPP approved?

It was not included in C-NRPP's 2024/25 consumer monitor evaluation, so there is no C-NRPP result for it either way.

Does the XR0A-iR measure anything besides radon?

Yes, temperature and humidity. X-Sense lists a temperature range of 14 to 122°F (-10 to 50°C) and a humidity range of 0 to 100%, with sensor accuracy of ±0.9°F (0.5°C) and ±5% relative humidity. They are context for the radon reading, not a substitute for it.

How long do the batteries last?

X-Sense rates three replaceable 1.5 V AA alkaline batteries for 2 years, and gives a warranty period of 5 years for the detector.

What to do next

Updated October 6, 2026