Compare VisiblAir Air Quality Monitors

Compare portable, battery-powered, Wi-Fi, PoE, and outdoor sensor options to find the best CO2 monitor or indoor air quality sensor for your use case.

Best for Portable CO2 Checks

Choose Model F for a portable CO2 monitor with on-device display and data logging.

View Model F

Best for Battery Logging

Choose Model D for classrooms, inspections, and local data logging without Wi-Fi.

View Model D

Best for Connected Indoor Monitoring

Choose Model E-Lite for a Wi-Fi air quality monitor with CO2, PM, and VOC tracking.

View Model E-Lite

Best for PoE and Multi-Sensor Setups

Choose Model O for CO2, PM, VOC, NOx, Ethernet, and optional PoE deployments.

View Model O

Specification	Model F	Model C	Model D	Model X2	Model E-Lite	Model O
CO₂ Sensor	✓	✓	✓	✓ (option)	✓	✓
PM Sensor				✓	✓	✓
VOC Sensor				✓	✓	✓
NOx Sensor				✓
Temperature	✓	✓	✓	✓	✓	✓
Humidity	✓	✓	✓	✓	✓	✓
Pressure				✓	✓	✓
Connectivity	USB	Wi-Fi (2.4GHz)	USB	Wi-Fi LTE (option)	Wi-Fi	Wi-Fi Ethernet
Power	Rechargeable battery (USB-C)	Rechargeable battery (USB-C)	Rechargeable battery (USB-C)	USB-C	Rechargeable battery (USB-C)	USB-C or PoE
Use Case	Portable, Indoor	Portable, Indoor	Portable, Indoor	Outdoor	Indoor	Indoor
Warranty	1 year	1 year	1 year	1 year	1 year	1 year
More Details	More Details	More Details	More Details	More Details	More Details	More Details

How to Choose the Right Model

Portable CO2 monitor with display: Model F
Battery-powered CO2 monitor with local CSV logging: Model D
Connected indoor air quality monitor for homes, offices, and classrooms: Model E-Lite
PoE or Ethernet-ready multi-sensor monitor: Model O
Outdoor particulate and weather-exposed monitoring: Model X2
Need help with calibration or VOC interpretation? See the CO2 calibration guide and VOC guide.