Temtop 2 Pack S1 Indoor Air Quality Monitor, Portable AQI PM2.5, Temperature, Humidity Detector for Home, Office or School, Air Quality Tester 4 More Home Monitoring, Battery Powered, Magnetic Suction

Wow, what a cool and easy to use device! I bought it because I am concerned because we live in the approach corridor of a major airport and I wanted to know how the incessantly flying airplanes affect the air quality. The device works right out of the box. Switch it on and it give you a number for the microparticles (PM2.5) and the air quality (AQI) pluis temperature and humidity. The two settings you can chose are F or C and how often you want it to make a measurement where you can go from real time (always) to every 30 minutes which obviously saves battery life and also the lifetime of the device itself, because these work with a laser that wears out after three four years. You can charge it with a standard USB C cable that is included, I have it running now for a week and the battery still shows five bars, even if I have it on measuring every five minutes. The best thing is that it is so small you can bring it everywhere and that's what I will do because I am also concerned about the air quality in hotels. And the second best thing is that it costs less than half of the fancy devices that you uselessly can connect to your Alexa. And by the way, our air quality is pristine, the PSM are in the single digits and the AQI rarely is ofer 15. I am relieved.

This air quality monitor is accurate, easy to read, and very helpful for understanding indoor conditions. It responds quickly to changes in the environment and gives clear, reliable readings for everyday use. The build quality feels solid, and the interface is straightforward. A great tool for keeping track of air quality at home.

Good value for the price. Works well.

I was told by my pulmonologist to buy some hepa air purifiers for my allergies and asthma. While researching those I came across a review where the commenter mentioned she bought an AQI to test if the air purifier works well. Now I never heard of something like this existing - I thought you would have to hire a specialist to come out and test for things like this with expensive professional equipment. If I had known about an AQI before I would have bought one ages ago. I've seen a lot of criticism about the battery life, but there are actually 4 settings. When I first got the device I put it on the R setting (test every 2 seconds) and walked around each room of my apartment to see what the air quality actually is. This setting uses the most battery power and I don't like it because the numbers swing wildly and it's confusing. I tested out other settings as well and decided to keep it at A. While on A the AQI remains fairly stable. I recieved my device almost a week ago and the battery is at the halfway point. How do I know this device is accurate? The AQI remains mostly in the single digits, but when I light a cigarette the device can go as high as 80. I was shocked, I had no idea it was that bad. This gives me something to think about...... One last thing - my car A.C. is running cool not cold like it should. I already took it back to the mechanic twice after paying 2k for a total rehaul. The mechanic insisted, on my 3rd visit, they tested the temp of air coming out of vents at 48 degrees. I knew this wasn't right at all because I'm sweating like crazy. One day I had to run errands in diff parts of town. I bright this monitor and put it on the console tray which is right above knee level. The kickstand included was so helpful! I drove to 4 places in 3 hours, about 60 miles altogether. After each stop i took a photo of the reading (please note AQI is higher in 2nd photo because I smoked with the window cracked). The interior temp of my car never went below 90 (live in Arizona) and I plan to take my evidence back to The mechanic to prove they didn't do it right the first 3 times. Thank your for creating such a useful device at a great price!

Excellent product. High quality. Very easy to use. Very strong material.

This is reasonably similar in accuracy to government level devices at reasonable levels. I'm writing this review in response to other reviews complaining about things they don't understand. First of all, if you actually read the specifications of the sensor, there is a reasonable margin of error. I've tested this sensor and there is actually a government website that compares Elitech's sensors to government sensors for PM 2.5. It is accurate and within the specified margin of error. Yes, even the same sensors side by side will be slightly different from each other. If you are complaining that it one shows 3 PPM and another shows 5 PPM, then you need to realize that at those levels the margin of error is 5... so being 2 points apart is within the specifications of sensor. And either way, it literallt makes no practical difference; you would still know the air is excellent. The same goes for if one reads 100 PPM and another reads 90, that is also within the margin of error and you would still know the air sucks! Second, there are multiple modes. If you put it on a mode where you make the sensor work every 1.5 seconds, of course the battery is going to be used up faster compared to if it runs every 5 minutes or every 30 minutes. Lastly, if you are complaining that the readings are completely different from each other or that the number doesn't change even if you move to different places... you probably have them refreshing every 5 or 30 minutes and you need to put it om the "R" mode where it refreshes every 1.5 seconds instead if you want instant information. Basically, all the negative reviews are by people who don't understand but think they understand. This device does what it is supposed to and is well engineered. People who complain literally can't read or didn't bother to read about what they were buying.

A alguien más le pasa que siempre marca eso, en 3 lugares he estado y solo marca eso, o esta muy bien el ambiente en todos lados o el equipo está mal

Com menos de 2 meses de uso, soltou a fumaça mágica enquanto estava recarregando. Não recomendo.

Simple, small and useful. The batter last a lot. Being USB-C makes ir very convenient to me.

Great little monitor to see what the air clarity is in your home. It sets itself up just needs a charge. Size is small enough to sit on a side table. Functions are all that you need.

It does seem to provide pretty accurate PM2.5 and air quality readings. At least, these jibed with the one-word weather descriptions of Accuweather, a weather forecasting service. But will still need to try it out more to ascertain if it’s really accurate over a spectrum of air quality conditions. As of the first series of readings though, it did well.