Kaiterra Laser Egg 2+ - High Accuracy, Wifi Enabled Indoor Air Quality Monitor with PM 2.5, TVOC Temperature and Humidity Sensor

It does provide good value which feels to be accurate .

The supplier was very nice and thoughtful

This is a pricey item but essential to keep track of pollution and the effectiveness of purifiers, especially in Delhi winters. This device tells you a few things - pollution is worse during the mornings, settles down during the day and starts to rise again at night. It also tells you that during the high pollution months in Delhi there isn't much of a difference between indoor and outdoor air pollution. Also, considering that lot of purifiers come with very rudimentary pollution monitors (or none at all like the BlueAir 211) a device like this is important to check effectiveness. I have docked it one star for two reasons. The battery life is average and lasts five or so hours if used continuously. Second, I had a torrid time getting the app to sync with Android. It works like a charm on IOS but Android required a few workarounds. I hope the company sorts this issue out.

I’m very happy I bought this. Easy to read so can ensure know what’s going on with pollution.

Defective piece sent. Ordered for a replacement.

Would not recommend it. The product does the job, only when it works and is charged up. It has very poor battrey and eeds to be constantly plugged in to outlet. The usb connector is 1) hard to put in- 2) after 2 weeks has stopped charging.

Its a good monitor , but its overpriced and overrated when u compare it to German and American products.

The object is looking nice and it will look nice on your side table. It is directly corrected to your phone, so you can see the history of the air quality. However, maximum limit is 2.5 pm is 500. So in a city like Delhi where pollution is high. You can't really know the exact pollution you live in if it is more than 500.