Features: 1. Know Your Air Clearly: For everyone,It's necessary to know the air quality of the place where you live.This air monitoring have LCD Digital Color Screen, large and easy to read. 2. Easy Operate: This air monitoring is easy to operate which just pressing the functional button and one full page design make everyone can easy to read all the real time readings at the same time. It's easy to carry the intelligent air quality monitoring that can help us detect the air quality in household, kitchen, bedroom, office, school, car, hotel, travel, camping, party etc..especially in which has baby,child and pregnant woman. 3. Rechargeable Battery: Air Quality Detector has rechargeable lithium battery. Built-in low power consumption processing chip, can carry on long time uninterrupted monitoringing to air quality. It will always take care of you and your family health. 4. Wide Applications: Widely used and practical, used for epidemic preventions and control to detect the CO2 concentration in the population, so as to control the number of people and avoids the risk of cross-infection. Description: Air quality monitoring built in small arrow electrochemical sensors that can accurate detect air of Carbon Monoxide(CO),Carbon Dioxide(CO2), Formaldehyde(HCHO), Volatile Organic Compound(TVOC), Particle Matter(PM2.5/PM10). This new mode can offer real time data and mean value, it is recommend you to focus on mean value of each gas after testing enough time because long-term monitoringing, the real-time data exist instability. Specifications: Material: plastic Color: white Size: 90*35*70mm Package Included: 1 x Air Quality monitoring Notes: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. minitorings are not calibrated same, item color displayed in photos may be showing slightly different from real object.