MULTIFUNCTION MONITORING: This indoor air quality monitor provides real-time monitoring of 9 crucial indexes including , CO2, PM1.0, PM2.5, PM10, HCHO, , temperature and humidity. air quality monitor keeps you informed of current air quality levels at all times to the breath health of your family HIGH-PRECISOIN : The air quality meter is equipped with NDIR infrared carbon dioxide sensor, laser particle sensor, semiconductor sensor, photoelectric sensor, temperature and humidity sensor, which responds quickly and sensitively, and provide accurate indoor air concentration COLOR AND SOUND ALARM: The color of the corresponding to a single gas changes according to the gas concentration, which are Good(Green), Moderate Pollution(Yellow), Poor (Orange), Unhealthy (Red) four grades. When the Normal is exceeded, the device emit a ticking alarm sound, the indicator light flash continuously and the interface color change. You can acquire in real time which gas is unsafe and take action accordingly to enhance the air quality CLEAR DISPLAY SETTINGS: Air Quality Monitor has a LCD screen display, each data is clear with color reminder , easy to understand. The screen brightness can be adjusted according to your needs, allowing you to understand the indoor air quality at a glance. LONG BATTERY LIFE: Equipped with a 2500mAh battery and Type-C Charging Port, easy to use and portable. Our air quality monitor provides up to 11-12 hours of continuous use on a full charge. With a low battery consumption processing chip, it enables uninterrupted air quality monitoring to safeguard you and your family's health. WIDE APPLICATION: This portable air quality monitor is suitable for testing the air quality in multiple indoor places such as living rooms, kitchens, basements, offices, planting rooms, and cars. Its compact design and ease of use the perfect solution for maintaining a healthy environment RESPOND PROMPTLY: If you have any questions about the products, we give you a solution . (Note: Charge it for 5 minutes before using it for the first time. Then, press and hold the multifunction button to turn it on. Please calibrate the product before using it) Color: White Material: ABS Package Contents: 1 x Air quality detector 1 x Charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.