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El producto viene bien empacado, y es de fácil manejo. Sin embargo, lo llevé a 3 estaciones de monitoreo ambiental diferentes para probarlo, y en todas la medición de PM10 fue más de 50% menor que las de las estaciones oficiales. En el caso de PM2.5, las mediciones si fueron adecuadas, pero las de PM10 no son confiables.Estaría bien que tuviera una opción de almacenamiento y exportación de información.Tuve que proceder a tramitar devolución para comprar otro equipo diferente.

Indoor Air Quality

I’m so impressed with this portable air quality reader. It arrived quickly and beautifully packaged. I love that the batteries were included and that it came with a USB charger. It has a great stand to perch the unit up. It is also very accurate as long as you aren’t moving around. I have a Dyson Pure Cool in my home and compared the readings and it was bang on. I actually bought this to measure the air quality indoors at work during the wildfires. Super impressed overall and would highly recommend this affordable awesome little unit.

This thing works well. The readout is clear and it's easy to use. It seems well built for the price. It has a rechargeable battery built in; so that's great, except it's odd that it uses a USB power source to charge. You have to supply your own charger, in effect. The green bar at the bottom reads 'good' when really the levels are well above desirable. (Check local standards). Price was a consideration in choosing this item, so I was not happy that there was a customs surcharge when it arrived. You compare products on the basis of posted price, but some have duty on them, and some don't, and you don't easily know which is which. This one was "fulfilled by Amazon", so I thought it was safe. The real price in Canada is $25 higher.

Update in Sept. 2022. This meter continued to work fine, but I bought a more elaborate meter and gave this one to my brother.Longer explanation: with Covid, I decided to track CO2 levels in restaurants etc. First I got an el-cheapo CO2 device for $60, which I promptly left in a hotel. 😢 Then I got the Temtop 2000C, for about $150, which measures CO2 PM2.5 and PM10, VOC, and NOX. I give a brief review for that meter.So I continue to recommend Temtop meters. They are intended for people who are not intimidated by small fonts and slightly complex menus/buttons. Make sure you decide which pollutants you want to measure and get the appropriate model. I wish they had WiFi or Bluetooth, but that would raise the price.Update in September 2020.This device has held up well and I am using it to track air quality during the ongoing California fires. Its outdoor readings match official numbers pretty well, and I now think it is Reasonably accurate. When I move it from indoors to outdoors, or into a room where I have an air filter running, its readings are about what they should be.As I surmised in the original review, the graphing mode is not very useful. Spikes get averaged out over time. The main way I use it is to bring it into a room, or outdoors, turn it on, and wait about one minute for readings to settle down.What it shows is valuable. For example my air filter reduced the p.m. 2.5 in a 15 X 15 foot room from about 90 to below 20 in half an hour.After a few hours, it was below 10. Similarly, when I open windows, I can track how the indoor air quality worsens rapidly.I’m going to try it in my car to see effects of AC.I also have a “Flow” Meter with a much more sophisticated design, but I find that this is actually more useful for several reasons.PS I’m near San Diego, otherwise the AQI would be much worse.======= ORIGINAL REVIEW ====It's very hard to find good information on the many IAQ (indoor air quality) devices, so I will write a prelim review after 24 hours of use. This device, P600, is less than $100, and it ONLY does PM2.5. (It claims to do PM10, but I have not tried it and I suspect that it just uses a formula to extrapolate.)o It is quite mobile. About the size of a 2000 cell phone. The battery lasts several hours, at least, and it's easy to recharge. It was easy to carry, around although if you put it inside a briefcase the readings will naturally be inaccurate. I carried it in my hand while walking.o It has 2 modes: current level, and a continuous graph. When you start the graph, it shows readings every few seconds at first. After a few minutes, it changes scales to give less frequent readings. If you keep leaving it on, it seems to give one bar on the graph every half hour (?)o ACCURACY: this is the key question. I purchased a second meter (Awair) just so I can run them side by side, but I have not run it yet. For now, I can only report that its readings are "plausible." In a clean and almost empty restaurant I got a 7 (I believe this is in micrograms/cubic meter). Walking home late at night it was around 16. Leaving it on at home overnight it gave somewhat lower numbers. But there is no way to tell if these numbers are correct, and I have not yet moved it to areas where I expect high readings.o Don't like: there seems to be no way to go back through its memory. I am going to have to photograph the screen once a day to get a 24 hour graph! (This is a tradeoff for the low price, and I knew about it ahead of time.)o Similarly, there is no clock. The only way to tell WHEN a bar on the graph was taken is to count backwards from the current time.o If I leave it on for many hours, the graph will "average out" any spikes. The only way to detect short spikes is to keep it in continuous mode. Perhaps I will set up my phone to take a picture every minute. (I once read that scientists used to use 16mm cameras to photograph their instruments, in order to get continuous data! This would have been before microprocessors were invented.)o There appears to be a way to adjust the readings, but I have no clue what it is for or how to use it. It starts at a setting of 1.00; if I change this to 2.00, all the readings seem to double.o Overall, it appears that this is a minimalist design which puts all its money into giving accurate PM2.5 readings moment by moment, and a minimalist recording.o I'm giving it 4 stars for now, but that is just a place-holder.o I will try to report back in a month or two.