Carefor Upgraded CF-20 Professional Air Quality Monitor 10-in-1, Accurate CO2 & PM2.5 Sensor, Smart AQI Alerts Rechargeable Indoor Air pollotion Detector for Office & Commercial Spaces

The Carefor CF-20 air quality detector monitors CO2, formaldehyde, and other pollutants with customizable settings and a 6-stage visual indicator.

• The description claims the device can set custom safety limits for CO2 levels.
• The description claims the device provides a 6-stage visual indicator of air quality.