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My PM levels are staying on 1 and won’t change. Is that correct?



  • K1478625

    Hi, mine is rangebound in single digits despite presence of 2nd hand cigarette smoke in the vicinity, should we be expecting much higher readings then?

  • Abraham Gomez

    Hello, thanks for the question. How well ventilated is the space and do you use an air purifier? Either of those could contribute to lower-than-expected PM levels. However, you can also perform a quick test on the Halo. To do this, you can blow some smoke from a cigarette or match directly towards the Halo to see if the PM values change as expected. If they do, it's working properly. If not, please contact, and one of our team members will be able to help you.


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