TemtopAir Quality Monitor Detects PM2.5 PM10 Formaldehyde TVOC AQI Temperature Humidity Tester Particle Counter Indoor Outdoor Air Pollution Detector with Data Export, LKC1000S+ 2nd

I have no way to check the calibration, but it seems to work well. We all have allergies in our house, and we leave it running most of the time.Its silent, and the charge last about 18 hours of use. You often feel like your a ghost buster wandering around the house to see whats reading what.I do laser engraving on a cheap chinese thing and didnt realise how much crap is put into the air.It also settled an argument between myself and the wife about what was worse for allergies, the cat lost, the dog isnt anywhere near as bad for airborn particles. 😀

great value for money seems very accurate and easy to use.

I bought this because I was worried about the air quality in my house for quite a while. The results were very surprising and I think it would be a useful tool for anyone wondering if they have issues and wondering what actions are making the air better or worse. The tldr was that the air in some rooms was much better than others, the kitchen was consistently the most polluted despite strong extractor fans, opening windows always makes the indoor air better, if it smells like chemicals then it's filling your air with chemicals, and beware the high VOC content of certain modern soft furnishings. I threw out a lot of polyester furnishings and the VOC content of the air improved drastically. And most importantly my sinuses and breathing are now noticeably much better.

Absolutely wonderful addition to my workshop and helps me to know when I should wear a dust mask and when to leave the workshop for a cup of tea!I looked at cheaper models from other sources and did a lot of research (a lot), and this is a well-trusted brand with a good history of making devices of this kind, giving me confidence in the product.You need to calibrate it from the box which is no effort at all and it has been great ever since.i t has a wide range of readings and p[resent some nice graphical information which for me (an engineer) is really appreciated and useful :)No issues at all and very pleased with it

Bought because I was worried about formaldehyde and a lot cheaper than calling someone in. All OK on that front. The particle sensor is an added bonus ... try it after hoovering 😀

None of these air quality monitors will provide you an accurate reading simply because they don't really detect all the particles in the air going through them, so do not believe in the "numbers". You should only use it to have a baseline of what is "healthy" vs "unhealthy".If you see high readings in this device, you can be sure things are really bad. This is why I gave it 5 stars because it does the job in keeping us informed whether things are good or bad.If you use an air purifier when things are bad, the readings will also react to it so I like this device, just don't take the numbers to be absolute.

Works well but very expensive for what it is would have bought it if I had known

It’s easy to use and understand the readings