Features: Comprehensive CO2 Monitor with immediate color LCD display and integration track CO2, TVOC, HCHO for best indoor air quality management. easy carry ABS build detectors features 1200mAh battery, alarm clock functionality, and auto switching type for smooth day/night environment monitoring. designing for health focused homeowners, office workers, and facility managers requiring precise air quality analysis in dynamic space. Monitors bedrooms, kitchens, conference room, and medicine facilities with 10℃~50℃ temperature detection and 0 to 99% humidity trackings capabilities. Small size, easy to carry for anywhere you want. Specifications: Material: ABS Size: about 70x35x90mm/2.76x1.38x3.54inch Package Includes: 1xAir Quality Meter 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 differences between different monitors, the picture may not reflect the actual colorful of the item.