LifeBasis Air Quality Monitor Formaldehyde Detector, Indoor Air Pollution Sensor for HCHO TVOC VOC AQI PM1.0 PM2.5 PM10 Particles Ultrafine Dust, TEMP HUM Real Time Air Tester Kit for Home Office Car

The media could not be loaded. I bought this indoor air quality monitor to monitor my 3d printing workshop, which I am using FDM and DLP printers which use some nasty chemicals. The Lifebasis Airquality monitor tests for many pollutants including Formaldehyde, Toluene, TVOC & VOC, PM - PM1.0/PM2.5/PM10 /Air Quality Index(AQI)/ Temperature/Humidity essential in my 3d printing workshop, there is an alarm function which I have never used. My only gripe is that it doesn't record a to a downloadable file which would be useful, but not anywhere in this price range anyway. It has a built-in a 2Ah rechargeable battery which lasts about 8 hours, although I leave it plugged when using. The readout is via a 2.8” colour LCD display which is easy to read. The function I really like is the ability to calibrate the monitor which I show in the video. Recommended.

Good monitor to get some insight of polluted air, Reading of the humidity is affected by where you've started your device and seems to be little bit of if you change place with greater difference in humidity.The thing that annoys the most is that you don't have ability to turn of OR mute alarm so if any reading is in bad status device will alarm constantly and alarm sound/ beeps is similar to EKG beeps so you will have feeling that you are in the hospital. Also The most severe AQI status has typo.

Seems to work well to detect air pollution. Very easy to use, and good battery life. Humidity readings seem innaccurate but this doesnt affect it's use as an air quality meter. Good value for money.

Battery life is about 4 hours. Reaction time is fast for all sensors except HCHO(formaldehyde) and TVOC(total volatile organic compounds) which take a few minutes to come on initially then they react quickly from then on. Accuracy for humidity seems very good comparing with other instruments in the same environment, although a bit slow to react. I did notice that after drinking red wine my breath made TVOC go to 9.999!The screen contrast is poor, on a sunny day outside I could not see anything unless I found a shady area to read the screen. The thing beeps when warning of an AQI breach but you can’t switch it off and it can be annoying.A typo on the screen (series should say serious) indicates the Chinese origin and does not instill confidence (see photo) but as this was the cheapest meter I could find with the range I wanted I am very satisfied. The danger photo was taken in a kitchen during a serious fry up!Also, it does act as a fart meter! TVOC goes to full danger 9.999 if someone cuts the cheese!-)UPDATE:Temperature sensor is way off. Humidity is about right. TVOC/HCHO counts down from 200 to zero before starting up. PM levels still matching a separate sensor (see photos) so I am reasonably confident they are accurate. On a bad day outside both devices agreed within 2 points of each other that the PM 2.5 level was 560! No photo due to low contrast making it impossible to get an image in the sun. It is still a great entry level meter and I am going to invest in a higher end meter.

Unit I received did not appear to property detect HCHO formaldehyde, instead it is calculated based on VOC. I did a few tests with a more accurate unit and found while VOC seems to be picked up slightly inaccurately, HCHL always fluctuates with VOC and does not conform to actual levels.I had some suspicions when I tried to blow out dust from it with my mouth and it showed lethal levels of formaldehyde.From my tests including isolating in a container with formaldehyde hydrate, the readings are still impossibly low.If your goal is to measure formaldehyde after renovation or new furniture, this can give you a false sense of security.

Having used this for couple of months now I can say it's a solid device, especially for the money. As long as you interpret results with reason, e.g. when measuring vocs use relative to a good reading. In centre of London close to traffic vocs get above 0.5, particle count 20+. Away from traffic you get 0.1 and less than 5 respectively. Thoroughly recommended. Could be further improved by allowing history reading and connect to wifi.

I had another air quality monitor before this one. This shows PM2.5 much lower then that one. I am not sure which one is more accurate, but this one seems to use humidity data while calculating PM2.5, so it is possible that this one is correct. Until I can be sure of its accuracy (and I have doubts) I am leaving only 4 stars, but I really think it is one of the best such monitors I have seen.

Simple to use. Reassures you aren't breathing in toxic air. Appears to give appropriate results for environment. Small and portable. Stand broke off on third use.