Features: The CO2 Detector delivers precise real time monitoring of PM2.5, formaldehyde, and CO2 levels with sensitive sensors, ensuring accurate air quality assessment for healthier indoor environments. Featuring a high sensitivity digital display and shock resistant ABS housing, this air quality monitor combines rapid response technology with plastic construction for performances in demanding conditions. Perfect for families, school administrators, and industrial safety officers seeking professional gas detection without complex operations requirements. Optimize air safety in nurseries, laboratories, or renovated spaces where formaldehyde exposure risks and particulate matter fluctuations demand continuous monitoring. Its alert systems instantly notifies users through visual/sound alarms when detecting hazardous concentrations, while the compact design enables portable use during home inspections or workplace safety audits. Specifications: Component: ABS Color:White,Black Size:Approx.70mm/2.76''x35mm/1.38''x90mm/3.57'' Package Includes: 1Piece Air Quality Detector 1Piece USB Charging Cable 1Piece User Manual note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.