What's the difference between standard and professional radon monitors?

Do you need a professional radon monitor only if you’re state requires licensing? Can I use a monitor that is a quarter of the price of “professional” monitors?

Jacob, go with a monitor that is certified and approved by NRPP. Google just what I stated and it will direct you to their list. Don’t skimp on anything less than what is listed.

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Thanks Thomas! Do you know what the difference is between regular cheaper monitors and professional monitors? For example, the Radoneye 200 and Radoneye 200p.

I do not. Just my opinion, I would start out with a fairly new, but used Corentium Pro. But it’s up to your own research. You’ll have varying opinions here, so it’s time for YOU to decide, not someone else doing it for you.

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Thanks Thomas.

Fuck is wrong with you (2)


If you want to do a radon test for a fee, you must use a radon device that has been approved for this purpose. Here is a list of devices that are legal for doing radon tests.

You will also need to do some training. After you take classes and learn what you need to do, you will know what to do. You will have far fewer questions after you get educated.

Many of the questions you are asking will be answered in your studies.

Good luck with your classes.


Thanks Bert! I do have a specific question, I am thinking about ordering cord powered radoneye pros instead because they are each a few hundred dollars cheaper. When powering one of those with battery power instead of cord, what do I use? Some type of power bank?

the difference is the hardware, the software, report, and the cheap consumer ones and for just that. If you want to use the consumer model, please do not charge a customer for the service. both Radon eye 200 and 200P look similar, I have both, but they completely work different. If you do business and use consumer grade tools, Law suits can soon follow. Radoneye 200 is not meant for Real estate transactions, its not approved for it. If its a price thing, I have a Radoneye pro with all accessories and battery I’ll sell you for $550.00, Never used , But need calibration.

This is helpful thanks William. No thanks on the sell. Have you ever powered the radoneye pro with battery instead of cord? How do you do it?

Yes, I purchased a USB power bank battery. The radon eye plugs into it to power it for days.

Thanks William. Is it a certain type or certain voltage required? I obviously don’t want to damage the radoneye.

Just contact ecoscense, they can send you the exact models they have tested.

You also need an adapter cord. It will cost you about $75.00 or so for both. Plus the $800 for the radon eye pro. I can sell you mine, radon eye pro, case, battery, cables, never used. Just need a calibration which is a bit over $100.00. and then yearly calibrations after that.

Don’t waste your time or breath on this yahoo!

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Yes, the approved list of devices on NRPP is a great place to start…however: consider the quality of each device before you buy are rent. NRPP states that devices that have (counts per hour, or response function) CPH near the range of 2.5. (bottom of the measurement methods page at NRPP). NOTE: the long the test with the CRM the better the results. For 2 day tests the low-end NRPP devices have considerable variance and this matters when the radon levels are between 3 and 5. So, the more CPH the greater the accuracy. Here is how the devices rate on NRPP:
2.7 CPH SunRadon 1028-xp Solid State Diode
3.7 CPH AirThings Pro Solid State Diode (they call it Alpha Spectrometry, its the same thing)
NOTE: They use 4 chambers at 0.925 CPH and combine the data. They are separate and not back-ups.
10 CPH RadStar 310a (unverified sensor type) Likely Solid State due to the low CPH
14 CPH Rad-Elec Recon Solid State Diode
16 CPH RadStar 516a Pulse Ion
21+ CPH Both of the Femto-Tech devices (510 & LPT) Pulse Ion (Serious tech here!)
28 CPH RadStar 830a Pulse Ion (Serious tech here!)
Unlikely, but listed: 30 CPH RadonEye Pro Pulse Ion (the pulse ion chamber looks skimpy compared to the 830a, 510 & the LPT)
Unlikely, but listed: 30 CPH Breeze Listed at Pulse Ion but it is actually a BPX61 photo diode

I have take all these devices apart with the exception of the RadStar 310. I can clearly say that the two I trust from Femto-Tech are the LPT, Femto Tech 510 and I also trust the RadStar 830a. Pulse Ion tech that has its circuity properly protected from the background is the way to go. All of the other devices do not foil wrap the circuitry.

I went with a radoneye pro which does 30 CPH.