Monitoring Air Pollution with the Kaiterra Laser Egg

5th November 2019

The image below shows the levels of microscopic dust particles in the atmosphere in January 2019. While Europe and the US haven’t experienced the sort of levels that are currently making headlines in India, we shouldn’t be complacent. 

By the time smog becomes visible, levels can already be at unhealthy (150+) levels.  So how can we know just how much of these toxic particles and dust is floating all around us?

Visual 3d overlay showing PM2.5 particles across the globe
Visual indication of the levels of PM2.5 particles around the globe

The Kaiterra Laser Egg

The Laser Egg is an updated version of Kaiterra’s original AQI monitor of the same name that launched in 2015.  This new 2019 version adds indoor temperature and humidity monitoring to the AQI and PM2.5 particle detection of the previous model.

The Laser Egg’s accuracy has tested very favorably among other consumer level air quality monitors.


The unit is attractive and certainly wins over most of the cheaper models when it comes to styling.  There’s a 6.5cm (2.6″) screen at the front, a power and mode button on top and micro USB charging port at the rear which powers the monitor.  The box also contains a small printed manual in English and Chinese, and a USB charging cable.

Kaiterra Laser Egg 2 AQI monitor

An internal fan draws air in at the rear, across the sensor the exhausts it out the front.  While quiet, there is a faint buzz / whine from time to time which is really only noticeable at night or in a quiet room.  The micro USB charging port is also at the back.

There are just two buttons on the unit; power and mode.  Hold down the power button for a second or two to start-up / shutdown, while the mode button cycles through the 5 display modes.


The screen is a little disappointing at this price point and it lets the rest of the unit down somewhat.  The brightness is fine and can be adjusted via the app, but by today’s standards the resolution is low with a poor viewing angle.

Kaiterra Laser Egg Screen closeup
Click for larger image

The close up below reveals that the display is not at a native (i.e 1:1) pixel resolution which causes the screen output to be scaled across adjacent pixels.  This makes the already low resolution appear even worse…

The unit has five display modes that cycle through by pressing the mode button… 

The 5th mode is “LCD off” and dims the screen to its minimum setting.  This is still just visible about at night but should be low enough not to interfere with sleep. 


The Kaiterra smartphone app for iOS or Android is needed to connect the Laser Egg to a WiFi network. Firstly, make sure your phone is connected to your WiFi then pair with the device by scanning the QR code into the Live Air the app. With a bit of luck this will add the device into the app and also allow it to access the internet where it can upload it’s records for accessing remotely.

The LaserEgg will only connect to 2.4GHz WiFi networks, not 5GHz, which is very disappointing in this day and age.

The app also adds extra functionality to the monitor including local air quality and weather information, plus automatically checks for any firmware updates…

 Without AppWith App
PM2.5 Readings
Temperature Readings
Humidity Readings
Weather Forecast
Pollution Alerts
Automatic Calibration
Firmware Updates

Kaiterra “Live Air” App

Can you make out the low contrast text?

With regard to the app, there are maybe a couple of areas where it could be improved.  The text in the app is so lacking in contrast that it’s almost impossible to read even at maximum screen brightness.

A re-design here would be good and I hope Kaiterra can find a way of making the text a higher contrast to the background.

Secondly, as a recommendation, it would be nice if the “current” and historic particulate information for locations around the world could also include information on future predicted levels over maybe the next 24 hours.

Websites like are able to forecast levels in advance so maybe Kaiterra could offer this in future updates?


Pros Cons
Attractive design Relatively expensive
Good feature set Screen quality
Monitor via smartphone app Doesn’t work on 5GHz WiFi
Power cable is USB only
Kaiterra Laser Egg: Indoor Air Quality Monitor
  • ACCURATE. Monitors major pollutants and factors that affect indoor air quality, including PM2.5 (fine dust), temperature, and humidity
  • MOBILE. Monitor from anywhere with the Kaiterra app. Get access to historical trends and receive alerts when the air exceeds predetermined thresholds
  • CONNECTED. Works with other home appliances via Apple HomeKit and IFTTT. Set up your smart home ecosystem to automatically protect your home against pollutants and allergens
  • WIFI-ENABLED (2.4 GHz connection). Support for iOS and Android smartphones and tablets


Overall the Laser Egg comes recommended. As well as measuring indoor air quality it also keeps you updated on readings from your nearest air quality measuring station via the internet.

Although the screen quality is disappointing considering the price point, the unit still looks modern and stylish. The lack of support for 5GHz WiFi networks is a serious ommision in 2020 however, as dated 2.4GHz is being fazed out in favor of 802.11ac networks.

One other slight niggle is that it only comes with a USB cable for power so needs to be situated quite close to a USB power source. It would have been nice to have a longer cable included with the option to be plugged in permanently at a wall socket.

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