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 Display, Temperature & Humidity with Aler (White-B2)

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.

So far I've been used it for two weeks. Here's some updates: 1 the whole screen is clear, easy to understand. 2 The number is accurate, the change of the air quality is working good. The CO2 high when it's night time. The sensor is very sensitive to the change(window opened or closed). For it's price, I think it's a good product.

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!

This device actually measures 8 parameters including CO2, Temperature, Humidity, PM1,PM2.5, PM10,Formaldehyde and TVOC. The results are displayed on a nice color LCD screen. The PM & TVOC do not show decimal reading. Most of the time it shows 0 or 1. When compared with my other Air Quality sensor, the readings are reasonably accurate. The monitor can be integrated with Homeassistant through Tuya-local integration in conjunction with the Tuya or Smartlife app. On the whole, I am quite happy with this purchase.

This works great along with an air purifier w ultra violet light in my finished basement. Very happy knowing what the air quality is, and whether to correct, or introduce some fresh air. Well worth the purchase!

Great product. I was able to connect it to my Home Assistant via HACS and Tuya Local. It shows all the parameters in my HA. It is sensetive. I have a Zibro rs2222 heater and this air monitor was able to detect Zibro's fuel from several meters. The CO2 is raising if you breathe near the monitor. I don't have professional equipment to check how accurate it is, but the temperature and humidity measures correctly. I hope it will last.

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.

This 18-in-1 smart air quality monitor gives detailed and reliable readings for everything from CO2 to PM2.5. Fast and responsive, and the WiFi connectivity lets me check data in real time. It’s been great for keeping track of indoor air quality and making sure my home stays healthy.