Description 5-in-1 multifunction air quality monitor can detect CO2, HCHO (formaldehyde), TVOC, temperature and humidity in your living environment. Adopting sensitive sensor, it provides quick and accurate data in the LCD digital color screen. Built in with 1200mAh rechargeable battery, it can be widely in home, office, claroom, hotel, gym, greenhouse, warehouse and more Features: 5 in 1 Function: Multifunction air quality monitor cares for your health and can be widely used in home, office, claroom, hotel, gym, greenhouse, warehouse, etc. LCD Color Screen: Displays CO2, CO2 index, HCHO (formaldehyde), TVOC, temperature, humidity and battery level. LCD digital color screen for easy and clear reading even in dark environments. Carbon Dioxide Tester: Adopts semiconductor sensor, air convection detection, quickly and accurately detects CO2 concentration in the living environment. 4-color Indicator Alarm Buzzer: 0-799PPM (Green), 800-1199PPM (Yellow), 1200-1599PPM (Orange), 1600PPM and above (Red). The buzzer alarms when the CO2 concentration is above 1500PPM. Rechargeable Design: Built-in 1200mAh rechargeable lithium battery for strong endurance. With type-C USB interface for quick charging via power adapter, power bank, laptop, etc. Concise Appearance: Simple but stylish appearance, desktop or wall mounted installation, fits in well with different styles of houses. Compact and lightweight, easy to carry. Note: 1. Please read the user manual carefully before use. 2. Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding. Specifications: Color: Black/ White (Optional) Material: ABS + Electronic Components Screen: LCD Digital Color Screen Voltage: 5V DC Detection Principle: Semiconductor Sensor CO2 Detection Range: 400-5000PPM CO2 Detection Sensitivity: 1PPM HCHO Detection Range: 0-0.6mg/m3 TVOC Detection Range: 0-2.0mg/m3 Temperature Measurement Range: 0-50 Temperature Measurement Accuracy: 1 Humidity Measurement Range: 0~99% RH Humidity Measurement Accuracy: 2% RH Charging Port: Type-C, 500mA Built-in Battery: 3.7V 1200mAh Lithium Battery Item Size: 90 * 70 * 35mm / 3.54 * 2.76 * 1.38in Item Weight: 107g / 3.76oz Package Size: 14 * 9.8 * 4.8cm / 5.51 * 3.86 * 1.89in Package Weight: 168g / 5.93oz Package List: 1 * Air Quality Tester 1 * USB Cable (Type-C) 1 * User Manual (English, Japanese, Italian, German, Spanish, French) Bytheway,ifyoulikeourstore,pleaseaddourstoretoyourFavoriteStores.YoucangetourNewarrivalandDiscount informationintime. 1.We ship worldwide by China post,HK post EMS,DHL, Fedex,and so on,according to your choice when placing orders.we are unable to control the delivery time,because it is proceed by the Third-party service. 2.If you didnt receive the item after 45 days,please contact us first,and do not open the dispute directly,we will solve it quickly and in the best way. 3.Due to stock status and time differences, we will choose to ship your item from our first available warehouse for fast delivery. 4.Service transit time is provided by carrier and excludes weekends and holidays.Transit times may vary,particulary during the holiday season. 1 . If you are satisfied with our products,please give us 5 Stars Positive Feedback.Thank you very much. 2 . If you are not satisfied our the products,please contact with us firstly.We will try our best to resolve the problem. 1. You have 7 days to contact us and 30 days to return it from the date it was received. If this item is in your poeion more than 7 days, it is considered used and WE WILL NOT ISSUE YOU A REFUND OR REPLACEMENT. There are NO EXCEPTIONS Shipping cost is bear by both seller and buyer in half. 2. All returned items MUST BE in the original packaging and you MUST PROVIDE us with the shipping tracking number, specific reason for the return. 3. We will refund YOUR FULL WINNING BID AMOUNT, upon receipt of the item in its original condition and packaging with all components and acceories included, AFTER BOTH Buyer and Seller cancel the transaction from