Laser Egg 2 Air Pollution Monitor


The simple, effective Laser Egg measures PM2.5, temperature and humidity in your home. Backed by Smart Air’s open-data tests, the Laser Egg has high levels of accuracy when measuring PM2.5

NEW PRODUCT LAUNCH: Interested in air quality monitors? Smart Air is launching a new air quality monitor in July 2022. Get Your Spot on the Prelaunch List


Meet the world’s most popular smart air quality monitor: the Laser Egg 2.

Laser Egg Air Pollution Monitor

The Laser Egg 2 tells you instantly and accurately what is in the air you’re breathing, so that you know whether or not you efforts to keep your environment clean and healthy are working. Backed by Smart Air’s open-data tests, the Laser Egg has high levels of accuracy when measuring PM2.5.

A small fan pulls ambient air in through the back of the unit and pushes it out the front. In the middle, a laser beam cuts across this air current. As particles pass through the laser beam, the beam’s light is refracted. A sensor picks up the subtle changes, and information about the size and number of particles passing through is determined through a series of algorithms.

Laser Egg Air Quality Monitor smart device

Provides air quality readings in real-time; measurements are taken every 0.1 seconds and displayed on the LCD screen. Air quality can be displayed as PM2.5 concentration, AQI (US EPA & Chinese standards), and particle count.

An embedded Lithium ion battery means that you can take the Laser Egg 2 around with you, wherever you go. The battery lasts for approximately 8 hours on a full charge. Or you can leave it at home, plugged in and recording data, 24/7.

Which Air Quality Monitor should I get?

Laser Egg 2 versus AirVisual Pro

Your Purchase Includes 1x Laser Egg 2 Particle Counter
Connection Wifi
Power 2.5W
Dimensions L x W x H (cm) 10.6 x 8.8 x 8.8
Product Weight 285g
Measurement Range
AQI 1 – 500
PM2.5 Concentration (μg/m3) 1 – 999 
Particle Count 0 – 65536
Temperature (°C) 20 – 60 
Relative Humidity (RH) 0 – 100%


  1. Measures & displays Air Quality Index (AQI) using both US EPA & Chinese Conversions.
  2. Accelerometer changes between constant monitoring and timed monitoring upon touch.
  3. Wi-Fi chip provides internet connection; all data recorded while connected to internet is stored in cloud based database.
  4. Accompanying iOS & android app “Breathing Space” displays data recorded by the device and allows access to advanced features such as calibration and exportation data.

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Smart Air is a social enterprise and certified B-Corp that offers simple, no-nonsense air purifiers and provides free education to protect people from the harms of air pollution. We are proud to be the only certified B-Corp dedicated to fighting air pollution.

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