Features: The MT03 CO2 Monitor features a built in 1200mAh battery and advanced TVOC sensors, providing real time detection of CO2 levels, temperature, and humidity for comprehensive air quality monitoring. Equipped with a smart color display and hearable /visual alerts, this portable CO2 detector automatically start flashing red warnings when concentrations 1600ppm, ensuring prompt environmental adjustments. Essential for homeowners, educators, healthcare professional , and facility managers seeking stable indoor air quality analysis in dynamic environments. Compact and versatile, this air quality meter operates effectively in homes, schools, hospitals, laboratories, restaurants, and commercial spaces requiring continuous CO2 levels supervision. Designed with strong ABS construction and USB C charging compatibility, this multi functional gas analyzers serves as present for conscious individuals prioritizing health focused environmental management. Specifications: Name: Carbon dioxide detector Model: MT03 component : abs Size: about 35x70x90mm/1.38x2.76x3.54inch Power supply way : USB charging Package Includes: 1x CO2 Detector note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.