CHNADKSAir Quality Monitor Indoor, Portable Air Pollution Monitor, Rechargeable CO2 Monitor with TVOC HCHO PM2.5 PM10 AQ Temperature Humidity, Air Quality Tester, Air Quality Meter for Home Indoor

I'm not sure how accurate this air quality monitor is. In a room that I suspect harmful substances were smoked in by previous occupants, the monitor indicates that the air quality is excellent; and in another room in which I thought everything was fine the monitor indicated that the air quality is good.

I love this air quality monitor. It's got very clear screen which shows you order the things that you mostly interested in, but for me it's always the CO2 that drives everything. Too much CO2 in a room can make you feel really drowsy, so it's important to keep the figure low. This helps guide that. It's also got other metrics such as temperature, humidity levels which is useful to see, however not something that I've used much. The AQ number fits what my other devices say which is good.Cant really go wrong with this product at this price

The first thing I noticed very positively about the air quality meter is that the measurement values are all given in real time. In other words, the values are updated every second. This also makes it possible to recognize a direct fluctuation of individual parameters instead of just slow average values as I have known from other hygrometers and thermometers so far. The measurement accuracy is good I have measured it with other sensors and they achieve a realistic and more accurate result. The display is therefore easy to read and illuminated. You can find all measured values clearly on the display at a single glance without having to switch through any displays. If you want to use it in the bedroom to measure breath quality, for example, you can also switch it off at night via the display. When switched off, it does not lose the setting, but also saves the time thanks to the integrated battery, which is charged via the included USB-C charging cable..

The media could not be loaded.  EDIT: After 10 days the battery wa still showing FULL but the screen had frozen showing Co2 at 17PPM! THis is totally wrong, should be at least 400ppm on normal atmostphere levels. I've relagated this device down to 1 star as unreliable and inacurate.------------------- original review below ----------------MY video will possibly indicate the inaccuracy of these types of 'home' air monitors. I have put these two monitors side by side, one slightly behind, so that the air flow across the sensors is not affected by the other. You will see clearly how the measurements vary and have very little correlation.Even temperature and humidity are way out, not to mention the CO2 and PM 2.5 and 10 readings. Both units have been in this position for two hours, plus the CHNADKS unit is in constant reading mode. The other thing to note is that the CHNADKS unit always reads PM2.5 and PM10 with the same reading.This has been the case for a few days, they always read the same value and always change together, almost as if they are displaying the exact same sensor. I find this hard to believe, that there is no variation ever, at any point.The problem with these units, is that I can't in any way verify the readings for accuracy. There is no calibration, or reference to verify the readings. Which one is right? one or the other, or neither. IF they can't agree on temp and humidity, whey should any other reading be correct?On the bright side, these types of monitors can offer some "trend" in air quality. A reference against a normal level in a room or environment. I really can't say these figures mean anything except an indication of change, either up or down regarding the particulates, CO2, or other air components.

With the 9-in-1 Indoor Air Quality Monitor, you will be able to easily measure the air quality in your home. First of all, I can say that I like the design of it to be charged with usb type c. It is very simple to use and you can easily set the clock. I should say there are 2 different modes as ECO MODE and RT MODE. If you choose full-time data reading mode (RT MOD), the charge will run out in less than 1 day, but if you choose to read data every 30 minutes (ECO MOD), the charge will be enough for long weeks. If it had WiFi, we could reach the temperature, humidity and other important values of our room from long distances. Maybe if these updates are made in an upper version, it will be an ideal indoor air quality monitor.Thanks.

I was recommended to get one of these for asthma-related issues where air quality is very important.It is easy enough to set up and the battery lasts a long time on ECO mode ( I have not tried RT mode)It is easy to move around so can be taken with you when you are on the go.It took me a bit of googling to understand all of the readings but have a grasp on it now and I'm very happy with it.Recommended.

After doing extensive research on consumer grade air quality monitors, I was skeptical that I'd find a quality device at a fair price. However, this AQ-60 is by far the best portable air quality monitor I've seen from anyone. It's well thought out, accurate, fast responding, reliable, right-sized and backed by a seller that quickly answered all of my questions in great detail.Bottom line: Get this. You won't be disappointed.Below are my pros and cons as well as hands-on experience in using it.PROS1. Many Pollutant Sensors and 10 readings instantly visible on one screen: Air Quality, HCHO (Formaldehyde), CO2, TVOC, PM2.5, PM10, Temperature, Humidity, Date, Time.2. Accurate, fast readings, reliable3. Rechargable. Long lasting 30-day battery (in eco mode). Optionally, use USB-C to stay plugged in.3. Portability. Take it to any room, the office, a friend or family's home4. Customize screen. Show any sensor reading at top (above all other readings) by left button clicks.5. Handle. Securely carry or hang device.CONS & MITIGATIONS1. On screen setup could be more clearMitigation: It's a one-time learning curve. Just play with it to get used to it.2. No pollution trackingMitigation: This device is best used for real-time readouts3. No alarmMitigation: A quick glance shows air quality and all other sensor readings instantlyENHANCEMENTS I'D LIKE1. Backlight button to see in the low light2. Threshold alarm on AQ and/or sensor(s)MY HANDS-ON EXPERIENCEI was glad to learn that my home is better ventilated than I thought. I expected that garages and bathrooms would have worse air quality than living rooms and bedrooms. However, I was shocked to see that it's completely true about eating green/yellow bananas compared to yellow/brown ones.=> See my related pics and below descriptions.PIC (POLLUTANTS CHART):Color coded chart based on user manual and seller responses to my questions.PIC (LIVING ROOM):EXCELLENT... Windows open, fan on, lots of living room ventilation.PIC (BATHROOM):GOOD... Slightly elevated HCHO formaldehyde levels in a minimally used bathroom.PIC (GARAGE):POLLUTION... All pollutants somewhat elevated after turning on a sedan for only 30 seconds in a closed two car garage.PIC YELLOW/BROWN SPOTS BANANA):EXTREMELY DANGEROUS... AQ (air quality) is on last row, 95/100. HCHOs (formaldehyde levels) are 2.377 and off the chart being greater than 0.35. TVOCs (total volatile organic compounds) are way too high at 4.729.POLLUTANTS & IMPACTS TO OUR HEALTHAQ (Air Quality): A scale used to measure air quality based on the levels of various air pollutants, including PM2.5 and PM10. AQ ranges from 0 (excellent) to 100 (extremely dangerous).TVOC (Total Volatile Organic Compounds): A group of hundreds of gases and vapors that can cause eye, nose, and throat irritation, headaches, dizziness and nausea. TVOC sources include paints, cleaning products, furniture and cigarette smoke. In high concentrations, they can also cause respiratory problems and cancer.CO2 (Carbon Dioxide): A colorless, odorless gas that can cause headaches, fatigue and difficulty concentrating. Increased CO2 levels can indicate poorly ventilated areas. CO2 sources include fuel-burning appliances (gas stoves, furnaces, fireplaces), combustable appliances (grills, generators, welding equipment), decomposing organic matter (food scraps, yard waste, compost), plants, pets and humans. When the source is human, high levels of CO2 add risk for the transmission of respiratory and air-bourne disease (COVID-19, respiratory syncytial virus, measles, influenza, tuberculosis, pneumococcal pneumonia, Legionnaires' disease).HCHO (Formaldehyde): A colorless, pungent-smelling gas that can cause eye, nose, and throat irritation, headaches and nausea. HCHO are found in a variety of products, including building materials, furniture and household cleaners. In high concentrations, it can also cause cancer.PM2.5 (Fine Particulate Matter): A type of small particle air pollution (2.5 micrometers or less) that can be inhaled deep into the lungs, causing health problems, respiratory infections, heart disease and cancer. Sources include wildfires, fossil fuels (cars, trucks, buses, power plants, industrial boilers), construction dust emissions (construction sites, demolition sites, roads) and agriculture dust emissions (agricultural fields, manure, crop burning residue). PM2.5 can be transported long distances by wind, so it is important to consider both local and regional sources when assessing air quality.PM10 (Coarse Particulate Matter): A type of coarse particle air pollution (10 micrometers or less) that can be inhaled into the lungs, but it is less likely to reach the deep lung tissue as with PM2.5. PM10 can health problems, including respiratory infections, heart disease, and cancer. In addition to the sources of PM2.5, natural sources include dust from deserts, pollen and sea salt. PM10 can be transported hundreds or even thousands of miles by wind.

Minus: Drei gleiche Geräte und ein uraltes Gerät parallel am gleichen Ort betrieben und trotz 4Tage Calibrierung ziemlich voneinander abweichende Messergebnisse. Wem darf man nun glauben?AQ wird ziemlich unglaubwürdig hoch angezeigt. Sinkt nach Raumlüftung ziemlich spontan.Einstellung über die Tasten sehr mühsam. Keine Kontrolle ob Calibriering vollständig durchgeführt ist, sollte vom Hersteller vor-calibriert werden.Plus: Die Batteriedauer ist länger als 3 Wochen, Aufladung mit USB-C, damit unabhängig von Steckdose. Beim Altgerät zum Vergleich 10 Std, Aufladung mit USB-mikro.

While this product may be accurate - I have no way to verify that - the main problem I have with it is its battery life.It ran quite well the first 3 or 4 months after I received it. Then the battery started draining very quickly. There were times when it seemed to run down within an hour or two. Since I don't move it around, I just started plugging it in and using it in-place. Well, one morning the power had been off, and there was no display at all. I plugged it in, and the screen showed "Recharging." The next morning, 24 hours later, the same message was still in place.I unplugged it, and now it won't recharge at all. However, I can hear the slight sound of the circulation fan running. For that reason, this could be a display problem and not a battery problem.But the slow to non-existent recharge indicates a faulty battery.Other than this BIG negative, the screen is easy to read, it's quiet when it's circulating air, and it's small enough to put almost anywhere.

I started worrying about air quality during the COVID-19 pandemic. The importance of airing the room I was occupying became important for me and my family. I was mostly interested in CO2 and small particles in the air as my better half is asthmatic.After a long research of the options (the pandemic was over 2 years ago), we zeroed in on this product. There were no guarantees it was going to work, but we are really happy as it seems to be reacting even to small changes in our environment. For example, the CO2 goes quickly down when we open the balcony door to our bedroom. Similarly, if in a small room all doors and windows are closed, soon the CO2 creeps up.The product has a continuous reading mode, which gives you real-time measurements, but drains the battery, thus can last only a day without charging. However, that is enough as I took it on one of my business trips and boy was I surprised by the amount of CO2 on board of an airplane.All in all, very satisfied with this purchase.I just realised the photo shows TVOC at 0.000. This is the first time I have seen this. Will report back if it goes back to some normal reading.

I adore this little thing! I’d give this 5/5 star, but the battery life is TERRIBLE. Once you unplug, it lasts 30 minutes not 30 days like the pamphlet says. I don’t mind replugging but it does become a bit of work when you want to monitor your air quality closely like me. I appreciate all of the specs this monitor generates. It’s helpful for sure. Even if you don’t choose this meter, Don’t skip out on an air quality meter that can help save your health and life!