18-in-1 Smart Air Quality Monitor - Indoor WiFi Air Quality Detector with Dual Chip, Real-Time for AQI, CO2, PM2.5, PM1.0, PM10, TVOC, HCHO, Time, Temperature & Humidity with APP (Black-White)

This unit is built well and feels like quality plastics were used. It monitors the air really well with a tiny fan inside to move air across it's sensors and I have bought 3 more for my fam to use in their houses. So that's 4 of these exact ones that i can personally speak to. One I have running for almost 4 months 24/7 and the 3 I bought I had running for 3 weeks before giving them away. I own 2 trusted other brand air monitors that I look to as a control group for testing. The 1 I own and 3 others all read the same correct values and react correctly to breath and particle mater testing, and having a neighbor blow smoke into them sends them into a orange and then red parameter level quickly. Great functions like audio alarm and HCHO and TVOC monitoring for volatile organic compounds (building materials, cleaning products, foams/carpets, paints and various smoke) is great! The Co2 monitoring is probably the most useful day to day reading to watch as it shows the build-up of of the gas we all breath out. Co2 at my huose is always highest in the mornings after sleeping, a good reminder to open windows and bring in fresh air. The app is user friendly and easy yo install but not needed for anything but screen auto-brightnes, wich is unavailable without the app. The daily operation and usability is unaffected by not having the app. Lays flat, can be wall mounted or stands vertically easily. Battery lasts about 5.5 to 6 hrs with the screen constantly on, or can be left plugged in. My experiences have bein excellent with this company's air monitoring products, I have 2 of their hand held units also and they too test well. Great value for what it costs vs what it does.

So far so good, it seems to keep up and accurate with my other air quality detector. Finding accurate quality reading air monitors is tough to find, but i think this one does a good job. I like that i can check my temperature and air quality when i am not home and turn on my air purifiers if needed through wifi also. I think this was a great value. I use this air monitor in my kitchen and i have a different brand air monitor that i use in my living room. I just like knowing the air quality in each area. As far as the battery, i leave mine plugged in all the time for constant connections and i leave the air monitor in one general area and do not move it so it stays accurate. I like the appearance and it is pretty easy to see and read. But time will tell how these hold up.

I'm so glad I went with this air quality monitor. It's very sensitive and picks up someone lighting a cigarette within seconds. I have a three level home and I tested it in all three as well as outside and it gave me different reading quickly. I ordered better quality air filters the same time as I did the monitor but the monitor arrived the day before. Around two hrs after I installed the new filters I was able to visually see the difference they made in my home on the graph on the app. The app is free to use and doesn't need a subscription & has the option to add smart devices. The quality is outstanding for the price considering how sensitive it is and I now know that my homes air was definitely contributing to everyone getting sick so often as well as getting random sore throats. I have 4 small children in my home and three are babies. The air quality in my home was very dangerous for them and I didn't even know until I purchased this monitor. It works and is very easy to set up. I can't say enough good things about it. I'm so glad I decided on this one.

I so wanted these to work. And yet here I am, giving the first one star review I've ever given-- and feeling bad I could not select zero starts. I was hopeful when it arrived and was pretty easy to set up. I started watching the numbers... and placed it on the counter so I could see what was going on. It very quickly started sounding alarms for CO2, but I remembered it takes 24 hours to calibrate itself. The next morning it still showed CO2 beyond the red levels. So I put it outside in the fresh air. CO2 normalized somewhat, down to low 400's. Brought it back inside, and alarms sounded. It was literally still in my hand, only steps inside the door. Mind you this is a house with living people and pets-- so probably not really at 1500+ CO2. After multiple attempts I figured I got a bad unit and set up a return. I still wanted it to work, so I had a replacement sent. It arrived and I had the idea to run them side by side. I kept records of Unit 1 and Unit 2 over a few days. Unit 1 continued to alert me with crazy high CO2, HCHO and TVOC. I powered the units off, restarted, took them outside-- I tried to give them a chance to prove themselves. Unit 1 always had higher CO2 than Unit 2-- usually by about 400 points. Neither unit ever went below 400 for CO2 even when outside. On the 3rd day, Unit 2 wigged out and was 300 points higher on CO2, 8x higher on HCHO, and about 15% higher on TVOC-- while they were on the counter about an inch apart. Probably should note they were also always 1-2 pts different on temperature and humidity. Similarly the two units were always about 2 pts different on AQI, and 102 pts different on PM2.5. I wondered if CO2 was just not working at all-- so as a test I exhaled 3x on each one. Both responded by increasing the readings, then gradually normalizing. So some part of it's working. The units just register numbers 300-400+ different under almost all circumstances. Unit 1 continued to sporadically show alarms level readings for TVO when Unit 2 would show 0. By the fifth day, having recorded measurements many many times a day I realized there was no way to trust the functionality of either unit. It does not measure air quality, or any of the components satisfactorily. There is NO value in this product. This product has not been adequately tested and it's a disservice to be sending them out to people who need or want to know about their air!

Very happy with my purchase. The monitor connected flawlessly with my smart home app.now I'm able to find out what causes me to have breathing issues at my residence. The display on the unit is easy to read and is easily controlled via the smart life app.

I really like this product, though the screen is very thin and when I pulled the tab to take the film off, the screen started to move. Also the battery doesn't last 24 hours, so keep it plugged into a power source. But other than that it worked great. Setup was a breeze, I just used the QR code from the manual, downloaded the app, and then it synched up the time and date and the wifi settings. The colors are nice and I didn't do anything to set it up except change the units from SI to US. The display is very readable and the light level is adjustable in the app. This is a great value, and I highly recommend it. Some cons: The app wants you to subscribe to push notifications via SMS or some other thing. The max alarm levels could allow for higher values. My air goes between 0-500 AQI on a given day but the alarm max is 150 so I just disabled all the alarms except low battery. You can control the screen on/off and time out settings from the app. It's nice, because at night I like my bedroom to have zero light and this way I don't have to move it.

Still learning it's functions, but AQI seems off (always gives very low reading, even when pollution is present). CO2 seems ok. TVOC goes off regularly, which may indicate pollution, but AQI hardly changes. Nicely put together unit . Battery life not enough, (much needed for portability). Have to get the hang of it. May update this later.

it has a modern design with white casing that matches home style. Not too big to take a a lot desk space but screen is big enough for clear reading. Sensors react fast to reflect air changes. Multiple items can be shown on one screen or read from cell phone app. Battery lasts long on single charge. I like the alarm function so you can even use it as smoke detector.