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excellent portable air quality monitor
This air quality is portable. Very convenient for me to put it anywhere. It is very easy and comfortable to read data. What makes me happy is that this air quality monitor is rechargable. I have it charged at night and then it can work the whole daytime.
Purchased:
LKC-1000S+ 2nd
Charlie

Better than I expected
My husband purchased the monitor last week. We were not familiar to this kind of technology, so I started searching for and found that Temtop use Dart sensors to measure formaldehyde which is the best sensor to measure such pollutant in the market. It has been helping us a lot so far.
Purchased:
M2000 2nd
Jackie

Useful Tool
At the end of the normal 60 second cycle the unit will record and save the average and start a new test. This continues on for as long as the unit is powered on and set to sample. The menus are pretty intuitive, you can see the records for each sample as well as............
Purchased:
PMD 351
Robbyg

Shows the pollution
This device was very easy to use. I have no consistent way of verifying the accuracy of the of the PM2.5 measurement, but it did increase when I had smoke in the room. These ultra fine particles are so small, the can get deep into your lungs and even into your bloodstream.
Purchased:
S1
J J. Wagner

I believe it's accurate
I saw a lot comments online, some said M10 was accurate, some doubted its accuracy. I prefer to believe it's measuring air quality accurately cause sometimes I cook or open windows for ventilation, I can see the readings get different.
Purchased: