INKBIRDPLUS 6-in-1 Indoor Air Quality Monitor, Detects CO2, PM2.5, PM10, AQI, Temperature and Humidity for Rooms, Cellars, Grow Tents, Offices, etc. (PTH-9A)

Wow this thing is great. Shows all kinds of graphics for the air quality and temps and humidity for my house. Wife has been concerned about the air quality in general and this gives us more reassurance. No cords or anything necessary since it runs on a rechargeable batter that lasts a while. Great value for the cost and it’s convenient to bring when we travel too.

I’ve been using this air quality monitor mainly to keep an eye on air quality while 3D printing, and it’s been really solid so far. Setup was quick, basically turn on and good to go. and the display is bright, clear, and easy to read from across the room. It tracks CO2, PM2.5, PM10, and overall AQI, which is super helpful to see how things change during and after a print. The readings seem accurate and respond quickly when the printer starts running or when I open a window for ventilation. It’s nice having actual data instead of just guessing if the air’s getting stuffy or dusty. For anyone doing a lot of 3D printing or working in a small workshop, this little monitor gives some good peace of mind. Big plus it has USB-C charging port!

This seems to be a useful and accurate tool, and I especially appreciate the CO2 monitoring. I find myself opening a window more often when the level is high. I run my air purifier less often -- only when the particulate level rises. I have no idea how accurate it is, but it is responsive, for example, to ordinary cooking fumes or burning incense. It's fairly easy to set up, and I recommend calibrating the CO2 level manually, as the instructions suggest.

Temperature is always 5 degrees off and has an audible alarm which goes off every time I cook anything.

I'm very impressed with this air quality monitor. First of all it feels like it's very high quality. It does not feel or look cheap. I can tell a lot of thought went into the design. Setup was basically one button and it was ready to go, already fully charged. The display is straightforward and very crisp, bright, and easy to use. It's also accurate and the reading update instantly real time. The alarm feature is also a big plus because I put this in my garage man cave and I'll still be able to hear the alarm from other parts of the house. I also love how portable it is and how you can hand it on a wall. I highly recommend this!

Either I have a spectacularly clean home and nearly perfect air quality or this thing is not very useful for PMs It was charged up and calibrated outdoors and when finished after the 200 second countdown, turned itself back on and showed 008 on the PMs and 405 on CO2, which is pretty standard for outdoors according to the internet. Back inside the house.... So far it has not flashed above 005 on PM10 and not above 003 on PM2.5 and those were for just a fraction of a second. Even waving dusty things around it only causes it to flash at those levels for a moment occasionally and very briefly like not even a full second before it drops down again. Took it down to the basement of my 1922 house, which is unfinished and extremely dusty. Nothing changed. Shook a clothing item that had been hanging down there a while and nothing changed on the PM numbers same fluctuation from 002 to 004 and back down. The CO2 monitor definitely works. On the first floor the CO2 hovered in the mid 400s. In main part of basement the CO2 went up to about 550-600. I heard the furnace (a gas fired hot water boiler from 1956!!) kick on while I was down there so I took it into that room and held it a couple feet from furnace while it was firing. The PMs did not change but the CO2 started to climb to about 700+. Went back out into main basement area and CO2 kept climbing to about 775 and then started to drop back down to about 600. Went back up to 1st floor and it continued to drop back down. Overall I don't know if I trust the PM monitor part of this device or I just happen to have excellent air quality. Judging by the amount of dust on surfaces and floors that is regularly cleaned up, I would be surprised if the PMs were so low in the air. I am suspicious because I also have an air purifier with auto AQI and that thing will kick into high mode if I just pick up a throw blanket off the sofa and start to fold it not even shaking it out in the air. In the basement it will kick in if you simply walk past it! This thing never registered above 005 no matter what I did inside the house.

Got this air quality sensor and I’m pretty happy with it. Setup was simple—clear instructions made it easy to get the time right and run the calibration. Once it's going, it gives you a solid range of info: AQI, CO2 levels, temp, humidity, and particulate counts. It’s surprisingly responsive too—you’ll see the numbers shift in real time if something changes in the air. Battery life isn’t super long—lasts a few days—but if you keep it plugged in like I do, that’s not really an issue. Overall, solid little device for keeping tabs on what you're breathing.

This air quality monitor works well, with nice clear and bright display. And the readings are very close to my IQAir AirVisual and AirGradient monitors. Very simple to setup and calibrates CO2 easily. Great for any room in the house to display air quality. Reasonable price and I purchased two of them. I've been through a few air quality monitors and InkBird has been a real good and accurate product. Plus, InkBird support responds quickly for any questions or technical issues.