SMILEDRIVE® Portable Air Quality Pollution Monitor Meter with Colour Graphic Display|AQI, PM 2.5/1/10, TVOC, HCHO, Temperature, Humidity|Use Indoor Outdoor in Home, School, Office, Hospital, Anywhere

Great. Well built and accurate.

I have used this product for 24 hours. It is a good indicator of the pollution level. I check at various locations and with air purifiers on and off. And it is able to give a good reading. It was also very easy to use with all data available on a single threshold. I am still to use the logging functionality and it could be handy to monitor levels over a period. It feels good to hold in the hand and it is quite portable. My only qualm is with the battery life and charging. It has a USB C port but it doesn't work with all cables. You need to use the cable in the box only to charge it. And there's a specific instruction in the box, to not to use it with fast chargers. Which is a challenge, because you can't always figure out whether a charge is a fast charger or not. Even after charging, the battery life is quite short. Would have been great to have replaceable batteries instead.

Working as expected. For Ambient Air Pollution checking, this is the best device in my opinion. Read some reviews where reviewers try and match with public data- what is the point in buying this device then??! Registered warranty online and got instant confirmation on email. UPDATE AFTER TWO WEEK USAGE Kept air purifier off in bedroom and the Air Pollution level climbed to an Alarming 340. Overnight purifier kept on and the level came down to 116. Battery holding up good. Kids in the house getting super excited!

When the air was bad, garbage was being burnt at a distance, it showed a 35 aqi. Review update: the company contacted after we put the review, and instead of telling us how to fix the device (if it could) they wanted engagement (which is fine) but instead of steps to fix they said "It seems that there is no way that an Indian online brand can get through to customers!". I am hugely disappointed by the product, but also how this review was linked to "India" When I questioned their narrative they abruptly closed the discussion by saying "Facto non verba". While products can be improved, the behaviour of the seller was worse.

A very good device for measuring air pollution level, backed by a technically sound team. The response time of the device is fast, suggesting use of sensitive sensors. The product is good for measuring pm2.5, formaldehyde and total volatile gas concentration in the air around apart from humidity and temperature. Battery life is better than the claim. Graph function could be more versatile. Overall a very good product for a health conscious person to be aware of surrounding air and take necessary corrective action.

VFM - Value for money Does what it claims. Helping me to take informed decisions. Using indoor and outdoor and in car. AQI, AQI level, colour coding, the particulate matters- all visible at one glance.

It is simple and perfectly does its job. Bit fragile, so carry carefully.

Amazing product. Very accurate in AQI measurements. When you buy this, you realize how hard your air purifier is actually working. Brought down AQI from 300 to 18 within an hour. Easy to Use. Gives measurement on many metrics: AQI, PM10, PM2.5, PM1, TVOC, HCHO, Temperature and Humidity.