Description This detector is small and portable, can clearly display HCHO and CO2 concentration, the temperature and humidity of the environment, suitable for office, home, gym and other use scenarios. Features: it can detect TVOC in the environment and better understand the environment. Real-time monitoring and real-time display of carbon dioxide concentration per cubic meter. It can detect and display the temperature and humidity of the environment to help users understand the environment. It is suitable for office, family, gym and other occasions, with a wide ranges of applications. Intelligent color screen display, the number is clear, easy to identify and read. With alarm mode, users are prompted to pay attention to the environment. It has long service life and can be charged with USB cable. Small and portable, easy to carry, does not take up too much space, can be installed in the home Safe range: a.CO2: 350~2000 ppm b.TVOC: 0.000-2.000mg/m3; c.HCHO: 0.000-1.000 mg/m3; d.temperature: 0~90 e.humidity: 0~99%RH Packing List: 1 * Detector 1 * USB Cable 1 * Manual Note: The product is sealed and shipped for 7 to 15 days, because there are perfume and other gases in the box. After receiving the product, you need to stand for 1 hour, wait for the abnormal gas to volatilize, and start normal measurement; In addition, if the sensor is heated for more than 2 hours, the temperature measurement will be 2 to 3 degrees Celsius higher than the normal temperature. This is a normal error. If it is unacceptable, please do not buy it, thank you Description: Description: *1. CO2 Detection Range: 400-5000PPM *2. CO2 Detection Sensitivity: 1PPM *3. TVOC Detection Range: 0-2PPM *4. Temp Measurement Range: 0~50C *5. Temp Measurement Accuracy: 1C *6. Humidity Measurement Range: 0%~99%RH *7. Humidity measurement Accuracy: 2%RH *8. Charging Mode: DC5V 500mA micro USB interface *9. Battery: built-in lithium battery 1500mAh *10. Size: 9*7*3cm/3.54*2.75*1.18inch *11. Screen: about 2.75inch *12. Net weight: about 150g Features: *1. 3-in-1: can use as a carbon dioxide concentration detection, thermometer and hygrometer at the same time. *2. Battery supply: built-in 1500mAh lithium battery, use USB charging cable to charge it. *3. Color screen: display the current CO2 data, temperature and humidity data. The colored ring will change according to the CO2 content. *4. Easy to operate: long pre the on-off key for 3 seconds to turn on and off. It will detect the CO2 automatically. *5. Compact and portable: can be placed in the kitchen, living room, bedroom, or take it when going out. Package Includes: 1x CO2 Meter 1x USB Charging Cable 1x Manual 2CO1T Specifications: Color: black, white (optional) CO2 measuring range: 400-5000ppm Temperature measuring range: 0-50 Humidity measuring range: 0%-99%RH Battery: No built-in battery Item size: 88 * 70 * 35mm / 3.5 * 2.8 * 1.4in Item weight: 117g / 4.1ounce Package size: 140 * 125 * 41mm / 5.5 * 4.9 * 1.6in Package weight: 173g / 6.1ounce Packing List: 1 * Air Quality Analyzer 1 * USB Cable 1 * User Manual