Dylos DC1100 Pro

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1

I were comparing a couple of PM2.5 monitor, in this case one Dylos DC1700, one Dylos DC1100 Pro and one Arivisual/IQAir

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1

The diode and photocell was accumulated dust

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2

I noticed that after 6 months of operation, the DC1100 was showing lower numbers comparing to DC1700, which was about a month in operation. So I check it out. On the back, looking through the fan, I could see one of the problems

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3

and sure enough, after opening the case, dust was noticeable several corner

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4

the exhaust fan was coated with a thick layer of dust

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5

The diode and photocell was accumulated dust

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6

a close up on the photocell