Can you just use the monitor by reading on the monitor itself without registering on line?

Yes - although account needs to be taken of the fact that there are wide fluctuations with time of the radon concentration in a home, depending on weather conditions and upon whether windows and (internal) doors are open. I have found that a radon fan and a radon sump together enable the radon levels to plummet dramatically. I normally use an average reading over several days, although shorter intervals between taking sets of readings can be very interesting (- especially if you like stats/numbers!). I found this detector to be extremely useful and ultimately, of course, its use is certainly no bad thing from a health perspective.

Did anyone have theirs delivered with the batteries already installed on? mine did, and i'm wondering if the one i received was a return/refurbish.

Hi there, Thanks for your question and interest in Airthings! David Harrison's answer is correct - this is how they are supplied, new, with a small plastic tab to remove to complete the power circuit. All of our Airthings products come with batteries, and in your case, the Corentium Home comes with 3x AAA batteries which should last up to 2 years. Simply replace them with new alkaline batteries when they need changing. You can read more about the lifespan of the Home in our help center https://help.airthings.com/en/articles/3669173-home-what-is-the-lifespan-of-the-home.

Mine arrived without batteries and no pull tab, why?

It could be that Amazon shipped you an open/used device, I would get in contact with their customer service to have them exchange this for you. All of our monitors will come in a sealed box with batteries and a pull tab.

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Airthings Corentium Home Radon Detector - 224 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, Intl Version, Bq/m

Airthings Corentium Home Radon Detector - 224 Portable, Lightweight, Easy-to-Use, (3) AAA Battery Operated, Intl Version, Bq/m

Product ID: 48668429

Details

Alarm
Visual
Brand
Airthings
Colour
Dark Grey
Item weight
0.15 Kilograms
Operating humidity
<85 Percent
Power source
Battery

📊Real-time short & long-term radon data

📏Compact 2.6x6.9x11.9 cm portable design

🔋3-year battery life

S$284

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Description

🏠 Breathe Easy, Live Confidently: Your Home’s Radon Guardian

INSIGHT AT A GLANCE - On-screen display shows daily, weekly, and long-term radon averages for smart decisions.
BUILT TO LAST MOVE - Lightweight and portable with 3 AAA batteries lasting up to 3 years—monitor multiple spaces seamlessly.
PRECISION YOU CAN TRUST - Advanced alpha scintillator tech delivers accurate radon readings within 24 hours.
DATA DRIVEN PEACE OF MIND - Generate instant radon reports—no lab fees, no waiting, just actionable insights.
EFFORTLESS RADON VIGILANCE - Battery-powered freedom means no outlet needed—place it anywhere, anytime.

The Airthings Corentium Home Radon Detector is a sleek, battery-operated device designed for continuous, accurate radon monitoring. Utilizing advanced alpha scintillator technology, it provides real-time short and long-term radon level readings on an easy-to-read display. Portable and lightweight, it runs on 3 AAA batteries with up to 3 years of life, enabling flexible placement throughout your home or workplace. With instant on-screen results and printable radon reports, it empowers proactive health safety without lab fees or complicated setups.

Specifications

ASIN	B00FORY4QU
Average Battery Life	3 years
Batteries	2 AAA batteries required.
Batteries Required?	No
Batteries included?	No
Best Sellers Rank	83,582 in DIY & Tools ( See Top 100 in DIY & Tools ) 37 in Gas Detectors 758 in Scanners & Testers
Colour	Dark Grey
Customer Reviews	4.4 4.4 out of 5 stars (1,244)
Date First Available	7 Oct. 2013
Delivery information	We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout.
Guaranteed software updates until	unknown
Item Package Quantity	1
Item Weight	150 g
Item model number	224
Manufacturer	Corentium A/S
Part Number	224
Power Source	Batteriebetrieben
Product Dimensions	1.02 x 2.72 x 4.69 cm; 150 g
Style	Compact

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S$284

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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