Description Upgrade Version The carbon dioxide detector detects the carbon dioxide gas of the onsite environment through absorption principle of infrared light sources. The product has the characteristics of temperature, humidity, tendency chart, 999 groups of data record, 3.2 TFT full color display, alarm setting, data record of time interval measurement, real-time date and time, chargeable lithium battery or separate external USB charging, use life of sensor 8,000 hours and stable data, max/min display, and the best point is the test data can be exported to PDF file. Features: PDF Data Export Function: the upgrade version allows you to connect with computer and export the PDF file for conveniently checking and analyzing. It also has a new function of displaying MAX and MIN value. The application field of carbon dioxide detector is public site, agriculture, animal husbandry, industry, and more. With profeional grade detection technology, this CO2 meter has stable performance, and high accuracy. 3.2-inch TFT full color display date, time, CO2, humidity, temperature(/ switchable), and other data clearly. Real time CO2 monitoring by the high precision sensor, and it will alarm you once the CO2 is exceed the setting value. Can store up to 999 groups of data, and has a chart of historical data trend for you to review. Compact size with a portable storage, easy to operate and to carry around. Rechargeable lithium battery is included, or can be powered up through 5V USB cable. Specifications: Type: Ordinary Version / Upgrade Version (Optional) Material: ABS Input: (USB) 5V, 2A Measuring Range: 0~9999PPM Resolution: 1PPM Accuracy: 40PPMrdg10% Temperature Measurement Range: -20~60(-4~140) Temperature Measurement Accuracy: 1(2) Temperature Resolution: 0.01/ Humidity Measurement Range: 0~100%RH Humidity Measurement Accuracy: 2%RH (20~80%RH) Humidity Resolution: 0.01%RH Working Temperature Range: -10~60(-14~140) Working Humidity Range: 0~99%RH Storage Temperature Range: -40~80(-40~176) Working Current: 100~300mA Charging Time: 3 hours Power Supply: 1 * 3.7V, 2200mAh rechargeable li-ion battery or powered by 5V USB cable Record Groups: 999 groups Screen Size: 65 * 48mm / 2.56 * 1.89in Storage Box Size: 252 * 206 * 70mm / 9.92 * 8.11 * 2.76in Item Size: 140 * 134 * 33mm / 5.51 * 5.28 * 1.30in Item Weight: 301g / 10.62oz Package Weight: 871g / 30.73oz Package Size: 26.5 * 21.7 * 7.2cm / 10.43 * 8.54 * 2.83in Package List: 1 * Detector 1 * USB Cable 1 * Stand 1 * Storage Box 1 * Manual (English) Ordinary Version Features: The application field of carbon dioxide detector is public site, agriculture, animal husbandry, industry, and more. With profeional grade detection technology, this CO2 meter has stable performance, and high accuracy. 3.2-inch TFT full color display date, time, CO2, humidity, temperature(/ switchable), and other data clearly. Real time CO2 monitoring by the high precision sensor, and it will alarm you once the CO2 is exceed the setting value. Can store up to 999 groups of data, and has a chart of historical data trend for you to review. Compact size with a portable storage, easy to operate and to carry around. Rechargeable lithium battery is included, or can be powered up through 5V USB cable. Yellow Version The carbon dioxide detector detects the carbon dioxide of the onsite environment through absorption principle of infrared light sources. The product has the characteristics of temperature, humidity, tendency chart, 999 groups of data record, 3.2 TFT full color display, with alarm setting, data record of time interval measurement, real-time date and time display, chargeable lithium battery or separate external USB charging, use life of sensor 8000 hours and stable data. Features: 3.2-inch TFT full color display date, time, CO2, humidity, temperature(/ switchable). Also can display test mode, historical trend, alarm value setting, records, setting, calibration, data clear and etc.. Real time CO2 monitoring by the high accuracy sensor, and it will alarm you once the detecting data is exceed the setting value, and you can pre enter button to open/close the alarm sound. Backlight brightne adjustable, 25%, 50%, 75% and 100% totally 4 gears for you to adjust. You can select to close auto shutdown function, or set 15min, 30min, 45min,1h, 2h, 4h, 8h auto shutdown time. Equipped with reset function, after reset all the parameters will be restored to factory parameters. Can store up to 999 groups of data, and has a chart of historical data trend for you to review. Compact and portable, easy to operate and to carry around with you. Comes with 3.7V, 2200mAh rechargeable lithium battery, or can be powered up through 5V USB cable. With profeional grade detection technology, this CO2 meter has stable performance, and high accuracy. Suitable for public site, agriculture, animal husbandry, industry, and more. Dont operate or calibrate the equipment parameters at will to prevents error in da