INKBIRDPLUS PTH-9A 6 in 1 Air Quality Monitor

why did i buy this: i do a lot of WFH and realized i get too tired and exhausted after just a hour. Dk why i bought this and found out that CO2 accumulation was way outta normal levels in my room due to poor ventilation. now i remedied the CO2 issue and also found out that my DIY air purifier works really well. normal AQI is around 70-80 normally in my region. Features and good experience with this product : built in battery lasts for a day but this device is designed to be connected to power at all times. CO2 measurement can be calibrated and is set to off by default built like a brick which i honestly did not expect measurements respond pretty fast to changes which i really appreciate. has a smoke alarm kinda feature where if AQI crosses 100 it beeps. looks nice in my room. The cons and bad experience. backlight is not bright enough experienced a glitch where CO2 ppm was stuck at 500 had to reset the device i wish it lasted atleast for months before charging if there is bad ventilation temperature reading is unreliable Something i want to say: i read a lot of reviews before buying this product and it seems like the seller is listening to feedback and fixing a lot of issues users experienced my experience till date is almost flawless except the problems mentioned above. which is also something i didnt expect. i expect this thing to last atleast 3 years or so and if it fails i will update my review as this one is not cheap at all atleast for me. overall i can confidently recommend this product if you can accept the shortcomings mentioned above

It was working fine for one day (showing value of 40 indoors), afterwards it shows a reading below 5 all the time even in highly polluted areas. The AQI reading is still incorrect after fully charging.

It does the job well. i think it may be detecting water particles as pm but that's not a big issue cause it also has humidity sensor so you know how to interpret the readings. Worth it.

Well made product - which gives several details including AQI, Pm2.5, PM10, CO2, Temperature and Relative Humidity.

Seems accurate reading. Only cons is beep sound everytime when aqi crosses 100. I have to off beep sound everytime with pressing (+) sign. Temperature and humidity sensor is inconsistent and sometimes incorrect. Reading jumps from 46% to 54% directly and 25% to 32% directly of humidity and temperature jumps directly from 23°c to 25°c. So don't buy for humidity and temperature sensor.

Pros: * Has AQI as well as CO2 monitor * All monitoring parameters are accurate Cons: * AQI warning can only be turned off only till device goes off, after that it is automatically enabled again * Should have come with app and wifi support, so that historical data could have been maintained and various readings could have been tagged

Writing this review after using it for 50 days. Though accuracy is good but it has become useless as it’s battery has stopped working.

Nicely work. User friendly.

I tested it by blowing some smoke, put it inside, outside... It seems to work perfectly

Battery died within a month. The fact that this item got a 3.8 star average review is telling. Most reviewers give a big benefit of the doubt so average review is usually above 4.5. That said, everything else I bought from Inkbird (sous vide, thermometers) are perfect.

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!

Temperature and Humidity meters don't work and battery does not last long.