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 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 The quality of air is very vital to our health, so you need an air quality detector to improve the quality of your life, this product can detect CO2, TVOC, temperature and humidity for you,come on and try it. You will not be disappointed with it. Features: Multipurpose: it can detect temperature and humidity, CO2, TVOC, you can see the data you care for. It is small in size and easy to carry, and it can be carried anywhere. Function: With intelligent alarm system, ga-s recognition algorithm, multiple anti-interference, air convection technology and greenhouse compensation calibration. Wide ran-ge of practical applications: agricultural planting, greenhouse vegetables, production warehouse, ra-w material proceing and so on. Large-screen design, real-time monitoring, clear digital display, and clear test results, fa-st detection and accurate value. The fine-performance chip can accurately capture the weak current generated during the electrochemical reaction and accurately calculate the measurement results. Carbon dioxide detection can be refreshed once per second, can be measured quickly and obtain relatively stable measurement values. Specifications: Material: ABS Color: black, white(optional) CO2 detection ran-ge: 400-5000 PPM CO2 detection sensitivity: 1PPM Temperature measurement ran-ge: -10~70 Temperature neasurement accuracy: 1 Humidity measurement ran-ge: 0%~99%RH Humidity measurement acuracy: 2%RH Charging mode: DC5V 500mA micro USB interface Battery: 1 * lithium battery, 1200mAh Item size: 90 * 70 * 40mm / 3.5 * 2.8 * 1.6in Package size: 92 * 72 * 42mm / 3.6 * 2.8 * 1.7in Package weight: 160g / 5.6ounce Packing List:(optional) 1 * Air Quality Detector 1 * USB Cable 1 * User 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