*KeyFeatures *Smart Detection: This 9-in-1 multifunctional detector comprehensively monitors various air quality parameters: CO2, AQI, PM1.0, PM2.5, PM10, TVOC, HCHO, humidity, and temperature, safeguarding your every breath in real-time. *Real-time Monitoring: Unlike ordinary detectors, our device features a multi-color health index and resamples every 1.5 seconds to provide the latest data in real-time. It emits an audible alarm when CO2 levels exceed 1000PPM, ensuring your respiratory health is constantly protected. *Accurate Detection: To address different air quality monitoring needs, the device is equipped with multiple high-precision independent sensors: semiconductor sensors, laser scattering technology, and infrared (NDIR) sensors. Combined with advanced algorithms, this ensures highly accurate and error-free monitoring. *High-definition Display: Featuring a 5.7 large HD display, it shows all values, time, and battery level in real-time. All data is fully displayed on the screen without the need to switch screens. A single button allows you to toggle temperature units. The backlight design ensures all data is clearly visible. *Long-lasting Battery Life: Say goodbye to the hassle of frequent charging. Equipped with a rechargeable battery, the 3000mAh capacity offers up to 9 hours of continuous use and features an auto-shutdown function. When the battery is low, simply recharge it, eliminating the need for battery replacement and promoting energy efficiency and environmental friendliness. ******************************************************************************************************* *Specifications Model: DM197 Temperature: -10C - 50C (14F - 122F) Humidity: 20%-85% Accuracy: 4% CO2 (Carbon Dioxide Concentration): Accuracy: 10% (Infrared NDIR) Time Display: Yes Battery Level Display: Yes Alarm Thresholds: CO2:1000PPM Screen Display: 5.7in LCD Color Screen (5.4in display area) Sampling Sensitivity: 1.5s Net Weight (with all accessories): 0.79lb / 358g Product Dimensions (L x W x H): 7.20x3.46x2.05in / 183x88x52mm ******************************************************************************************************* *Pakcage Content Air Quality Monitor x 1 1m Charging Cable ( USB to Micro USB interface) x 1 User Manual x 1