Product Description LCD CO2 Meter Air Quality Monitor TVOC PM2.5 Gas Detector Air Tester Special Features: Multifunctional Air Quality Monitoring: This advanced air quality tester not only detects CO2 levels but also measures formaldehyde, TVOC, PM2.5, and PM10. It provides a comprehensive air quality assessment, with real-time results clearly displayed on the large LCD screen. Independent Sensors with High Accuracy: Equipped with separate sensors and an innovative photosensitive refraction algorithm, this device significantly enhances detection accuracy and speed. The built-in 2000mAh high-capacity battery ensures continuous monitoring whenever you need it. User-Friendly Operation: The monitor is designed for ease of use, featuring just three buttons for full functionality. It comes with a USB data cable for easy recharging, making it a durable and eco-friendly choice for long-term use. Lightweight & Portable: The monitor's lightweight, high-quality casing, combined with a large LCD screen, provides a clear and comfortable viewing experience. Weighing just 0.41lb, it is easy to carry and ideal for use in various environments. Promotes a Healthy Environment: Perfect for measuring air quality in homes, offices, factories, hotels, and more, this device helps you maintain a healthier living and working space by keeping track of harmful pollutants. Specifications: Technology: Air natural flow Model: HLW-100 Display: LCD color screen with digital readout Accuracy: Error margin of 3%-30% Dimensions: 120mm x 72mm x 34mm Operating Voltage: 5V Preheating Time: 120 seconds (for Formaldehyde and TVOC sensor) Battery Capacity: 2000mAh Charging Time: Approximately 4 hours Standby Time: 240-360 minutes Package Includes: 1 x Air Quality Monitor 1 x User Manual 1 x Type-C USB Cable