9-in-1 Professional Indoor Air Quality Monitor Indoor Portable PM2.5/PM10/CO2, Temperature, Formaldehyde Detector, Humidity TVOC,Time Display Air Quality Tester - Confined Space Clean Air Monitor

I recently purchased this air quality monitor and I’m very satisfied with it. The display is clear and bright, and all the data is easy to read at a glance, including PM2.5, PM10, CO₂, HCHO (formaldehyde), temperature, and humidity — very comprehensive. Pros: • Clear Display: The screen is well-designed with vivid colors, making it easy to read even in dim lighting. • Multiple Metrics: It measures not just PM2.5 and CO₂, but also HCHO, which is great for someone like me who is sensitive to air quality. • Real-Time Updates: The data refreshes quickly and responds accurately to changes in the environment, like after ventilating a room. • Portable: Compact size makes it easy to move around and use in different rooms. • USB Powered: Compatible with standard chargers or power banks, which is very convenient. Overall, this air quality monitor offers great value for the price. It’s especially suitable for households with children, elderly family members, or pets, and for anyone who cares about indoor air quality. Highly recommended!

I’ve been using this 9-in-1 air quality monitor for a few weeks now, and it has completely exceeded my expectations. The real-time data on PM2.5, PM10, CO2, temperature, humidity, and more is not only accurate but also very easy to read on the clear color screen. I especially appreciate how quickly the readings update—within seconds—which gives me peace of mind when monitoring air conditions throughout the day. The compact design and rechargeable battery make it perfect for moving between rooms or even taking it to my office. It runs for hours on a single charge and gives me insight into how indoor air quality changes over time. I’ve already used it in my home, car, and even during a visit to a friend’s place—and it’s been consistently reliable. If you care about your health and want to stay informed about the air you’re breathing, this device is absolutely worth it. Highly recommend!

I didn’t realize how important indoor air quality was until I got this 9-in-1 air monitor. I thought the air in my house was fine, but this device showed me otherwise—especially with CO2 and PM2.5 levels getting high in closed rooms. It’s very easy to use, with a bright, clear display, and the portable size means I can move it from my bedroom to the kitchen or even the garage. The data updates fast and seems consistent. It also looks good sitting on a shelf or desk, not bulky at all. Honestly, it’s helped me improve ventilation and know when to open a window. Definitely a great investment for anyone serious about a healthy home.

UPDATE: it worked great for about 2 weeks and now is very intermittent. The screen randomly flashes or displays garbage data making it unusable. I am returning it and suggest you don't order it. --------------- This is a perfect addition to my office. I very much like the large easy to read dispaly and all the information it presents in an easy to view format. Other devices force you to toggle through screens but not this one. I also like the alarm functions a lot although none of them have gone off. It does run on battery but the life is a little short. That's the price you pay for lots of information on a large bright screen. I keep mine pluged in using the included power supply and USB C cable. I recently bought a PVC chair mat and this AQI meter clearly showed a large increase of TVOC's that the mat was adding to the air. The meter went from .033 to .085 overnight. That's a sharp increase in VOC's and indicated the mat was outgassing. It's not something I would ever want to breath so I sent the mat back. I can easily reccomend this meter. It's not cheap BUT it works well and you get what you pay for which is quality all around.

After a full charge, I left it on over night. The battery turned off the device in a little less than 12 hours. I'll be looking for a hazardous environment to test the unit.

I didn’t realize how bad my indoor air could get until I got this thing. It’s easy to use — just turn it on and it starts giving you real-time numbers for stuff like PM2.5, CO2, temp, and humidity. The screen is really clear, and I like that it’s small enough to move around the house. What surprised me the most is how much things like cooking or just keeping the windows closed affect air quality. This little monitor kinda made me more aware of my environment, and I’ve started airing out the room more often because of it.

This monitor gives me a clear picture of my indoor air with PM2.5, CO2, humidity, and more all in one device. Easy to read display and quick updates help me know when to air out the room. Compact and portable, great for checking home or office air quality anytime. Worth it for anyone serious about clean air.D24

over priced.