M10

It's able to detect upto 999 values (back in November in Delhi =_=) It's high quality and the finish is good. The battery life is okay okay, like I get upto 3 hours in full charge. It says it remains accurate upto 3000 hours of use. There's a hidden feature that's not in the manual. When you get to the last page of sensors, if you click once it will take you back to page 1 but if you double click the top button, it will take you through all the pages with a 3 second interval (page 1 -> 3 sec -> page 2 -> etc)

Good product and gives accurate reading on AQI in the house. We understood how cooking can affect our home AQI and are more measured in that. Packaging was torn when it arrived so that was a bit odd but the device in last 2 days since it has reached me functions well. Takes a long time to charge but, almost 4-5 hours in my experience. Also the AQI sensor takes a long time to adjust when taken from room to room, meaning the values slowly trickle down if taken to a low AQI room rather than immediately adjusting to the new AQI. Overall a good buy for the price but not a 5/5 for me. Also display is quite large for usage in your hall, would've preferred a more smaller display which can tuck into a corner of the hall but this is quite large and juts out easily.

Perfect working great but price is bit on high side.

Display goes bad in less than a year. For an expensive item quality diaply should be provided.

I am glad I bought this monitor when I bought an air purifier. Tells me exactly what my air quality is. Helps me decide when to use the purifier at full speed ( which is noisy) and when to use a lower speed. Tells me whether drawing the curtain is enough or whether I need to close and seal the doors and windows. I was surprised that blowers and oil heaters (with fans) interfere with the air purifier and this allows me to optimise the air purification. Two years later: there is a100 cycle hum which sometimes becomes disturbing. Otherwise the monitor continues to work perfectly.

Due to polluted and dusty air lungs problems are increasing. Generally we think it is due to some illness and spend for unnecessary medicines. We had such problems. Long time cough and sore throat. Medicines did not improve the health. This unit helped us that AQI inside is around 200. 1.5 micron suspended particles are more than 100 during mid day. This helped us to understand the problem. Now we have solved the health issues. This unit helps to monitor AQI always.

Their is absolutely no way it’s 456

Fantastic Product.

En Monterrey, Mexico, la calidad de aire es muy mala, muy seguido. Este medidor ha sido MUY bueno en medir la calidad de aire dentro y fuera de la casa. Basta con sacarlo por la ventana unos segundos para que cambie drásticamente el resultado de su sensor de la calidad del aire. También me ha ayudado a comprobar que los purificadores de aire de la casa están funcionando correctamente. Es muy portatil y la batería le dura suficiente.

I suspect it's not 100% accurate, but it's pretty good and it lets me pinpoint problem areas in our house. The M10 a little bright at night in the bedroom, but very readable in the day. Look great. The fact that it has a battery is really helpful. It let me move it around the house and leave it in different rooms for a few hours to get a good reading of the air quality and problems. It confirmed that the new paint in the bathroom is leaking VOCs, and I'll be getting an air purifier for that room now. Highly recommended for anyone who has lung problems, a persistent cough, or lives in a city.

con una carica il rivelatore mostra i dati per circa 4 ore. le letture dei sensori credo siano istantanee perchè i valori sono molto sensibili e variabili al cambiamento dell'aria attorno a se. a me basta tenerlo 5 minuti acceso per capire l'inquinamento della stamza e di conseguenza, arieggio o purifico o lascio l'aria della stanza come è. il display ha caratteri grandi leggibili anche da 3 metri. un solo pulsante per accensione, spagnimento, cambio lettura, addirittura cambio lettura automatico. cavo per ricarica usb in dotazione con presa sul posteriore del rivelatore, ed indicatore stato batteria. una spia verde/giallo/rossa in base alla qualità dell'aria e dallo stato della ricarica. 5 stelle perchè è proprio quello che mi serviva, anche se non ho avuto modo di verificare l'accuratezza dei sensori ma credo che per le caratteristiche descritte dla fornitore e dal prezzo non sia un giocattolo.

Temperature and humidity seem to align with other devices I have at home. PM2.5 stays around 4-5 and on few occasions it spiked to 80, and I have no idea why. The bar chart on it looks good but does not display the correct data, hence the 4 stars. I wish they offered firmware update.

Simple device that self-calibrates in fresh air. The only downside is the shorter battery life.