Features: Improve your indoor environment with the CO2 detectors, a versatile device that measures room temperature, humidity, and detects harmful pollutants. Suitable for various users, this CO2 detectors is perfect for offices, schools, and other indoor environments where maintaining better conditions is important. Create a healthier living environment by using this CO2 meter to monitor and maintain optimal temperature and humidity levels in your home. This CO2 detector is a compact and reliable device that ensures your indoor space are comfortable and conducive to productivity. Be awares of your indoor air quality with this CO2 detectors, providing you with valuable information on temperature, humidity, and pollutant levels. Specifications: Material: ABS Item size: approx 112x78x35mm/4.4x3x1.4inch Measuring ranges: Temperature :0-70C Humidity: 0-99%RH PM2.50-999ug/m PM100s-999ug Formaldehyde 0-9.999mg Organic pollutant TVOC: 0-9.999mg Carbon monoxides: 0-1000PPM Carbon dioxide: 0-5000PPM Air Quality Indexs AQI: 0-500 Note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x10 in 1 Indoor Environment Monitors