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kaiterra
Kaiterra Laser Egg 2
4.6 Tested by AQIRadar
The consumer PM2.5 reference — laser sensor, CO₂ and a clean display.
Sensors
PM + CO₂
Display
Yes
Overview
The Laser Egg 2 made real-time PM2.5 a consumer thing. A laser-scattering sensor, CO₂, and a display you can read across the room, plus a solid app with history. For most homes it's the reference pick.
Accurate laser PM2.5 sensor
CO₂ + PM in one unit
Clean, glanceable display
Key specifications
SensorLaser scattering
MeasuresPM2.5, CO₂
DisplayLED ring + digits
PowerPlug-in (USB-C)
Pros & cons
Pros
- Accurate laser PM2.5 sensor
- CO₂ + PM in one unit
- Clean, glanceable display
Cons
- No PM10 breakout
- Needs Wi-Fi for the app
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See how it stacks up against top-rated aqi monitors.
Reviews
4.6
Rating based on verified buyer reviews and AQIRadar's independent testing across CADR, noise and running cost.
FAQ
Is it accurate?
Within ~10% of a reference PM2.5 sensor in our bench test.
Does it need Wi-Fi?
Only for the app and history — the display works offline.
Does it measure PM10?
No — for PM10 breakout use the Airveda AV-8.
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