







From the brand

Explore T1 Now
Explore S1+ Now
Introduce our latest M10+
Home Series
Multi-Use Series
Elite Professional Series
Prep for Wildfire Season
Discover More
Discover More

Professional sensors make professional air quality detectors.
Temtop has more than 10 years of experience in developing particulate matter sensors,
only to create more professional air quality monitor, to visualize the air quality around you.
Temtop has over one million users worldwide and has been a reliable choice for many organizations, including the University of Washington, the University of Chicago, and U.S. government agencies


Language : English
Product Dimensions : 1.26 x 4.17 x 5.43 inches; 5.61 ounces
Item model number : S1+
Batteries : 1 Lithium Polymer batteries required. (included)
Date First Available : April 12, 2024
Manufacturer : Elitech
ASIN : B0D1K5TV89
Best Sellers Rank: #7,411 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #21 in Indoor Air Quality Meters
Customer Reviews: 4.3 4.3 out of 5 stars 956 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Daily Health Guardian: Keep tabs on the air you breathe with this air quality monitor, ensuring a healthy home environment by monitoring PM2.5, AQI levels,T&H you can trust.
Long-lasting Battery Life: With a battery life of up to 60 days, the device reduces the frequency of battery replacements, making it both environmentally friendly and cost-effective.
Easy-to-Read: Designed in the USA, our monitor features a clear, easy-to-read display that keeps you informed about your home’s air quality at a glance, making it simple to maintain a healthy living environment.
Instant Air Quality Feedback: Get real-time air quality updates with intuitive color indicators and audible alerts when levels exceed safe thresholds. Plus, stay connected with app notifications for a proactive approach to maintaining clean air in your living spaces.
Portable and Discreet: With its compact and modern design, this monitor is ideal for various settings including classrooms, office buildings, and more. Its portability allows you to effortlessly move it around different spaces, ensuring optimal air quality wherever you are.

Paul –
Air monitor review
I suffer from acute sinusitis and allergies. This season in Texas has been especially bad, and I felt that I was not feeling any better when indoors, even after taking allergy tablets. I wanted to make sure that my home was not actually making the symptoms any worse so decided to check by purchasing an air monitor. This one had good reviews and was reasonably priced. It arrived quickly and took minutes to set up right out of the box. I also like the stand that came with it and the fact it has a magnetic back, so it can be placed on a fridge or filing cabinet if needed. I wanted something easy and simple to read, and this has just what I needed, temp, humidity, air quality index and particle measurements. Within a few days I had readings for all major rooms, and fortunately all were good. It was comforting to know that the air inside my house was good and not making the symptoms worse. A great little unit.
Angela Roman –
Affordable, convenient and accurate
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!
daqdaq –
Basic ibfo. Good value.
Good value for the price. Works well.
Michael Esser –
Wow on all accounts, price, ease of use, portability and battery life!!
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.
Henry W –
Great thermometers and air quality monitor
I’ve been using these for quite a bit. Now they seem to be fairly accurate, they’re probably only you point .5- .8° different than other thermometers. I’m not sure how accurate the PM 2.5 or the aqi are. It holds a charge for a long time as well.
Mario N. –
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
Jean –
Tout est correct par contre il faut galérer pour bien comprendre la méthode pour la calibration, différente entre l’application et l’action directe sur le matériel.
Gustavo Neto –
Com menos de 2 meses de uso, soltou a fumaça mágica enquanto estava recarregando.Não recomendo.
Agustin Benito Bethencourt –
Simple, small and useful. The batter last a lot. Being USB-C makes ir very convenient to me.
Pw Lunt –
My son has quite bad asthma and this helps me keep control over the air quality in his room at night.