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4.5 out of 5
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  • progway
    CZ
    2020-08-26 09:13:07

    It works, I just don't know why O3 gradually rises to 200ppm at startup, then immediately starts to fall to zero. Otherwise, PM and TVOC work as they should. Overall, I am satisfied.

    Comments
  • honch
    JP
    2020-08-16 20:59:35

    I bought for O3 measurement. (Because the O3 measuring instrument is expensive) I don't know the accuracy, but I think it works well. Even if the time is adjusted, the clock does not advance during measurement. A mysterious specification.

    Comments
  • 2020-10-16 14:51:17

    Works well, clear, bright display - charge doesn't last a long time but other than that it is fine.

    Comments
  • Sipi
    HU
    2020-10-17 03:28:41

    The instrument is good, only the battery is quickly discharged.

    Comments
  • 2020-10-01 16:29:13

    This is a very good product. Recommended

    Comments
  • 2020-08-04 03:34:57

    unconfirmed delivery ignore the delivery confirmation mistake

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