Feature 19 IN 1 TESTER: This detector can detect temperature, humidity, PM2.5, PM10, HCHO, TVOC, CO, CO2, AQI for you at once, and you can check the data you care about at any time. 2BACKLIT LCD SCREEN: The color screen allows you to see different values at a glance, and the backlit display screen allows you to easily view data even at night. 3PORTABLE SIZE: This air quality detector can be easily carried or used on your desk. Easy to carry for home and other places to use. 4LARGE CAPACITY BATTERY: This air quality tester is powered by a built in lithium battery, which can provide a long service life and be charged promptly when the battery runs out. 5FINE WORKMANSHIP: HCHO and CO use electrochemical detection technology, TVOC and CO2 use semiconductor detection technology, and PM2.5 and PM10 use infrared sensors.Item Type: CO2 DetectorMaterial: ABSDetection Technology: semiconductor/infrared/electrochemical detection technologyApplicable Temperature: 0 to 70 Display Mode: LCD screen, backlightCharging Voltage: 5VPower Supply Method: 1 18650 lithium ion battery 1200mAh (built in)Charging Port: Type CSensor: PM2.5 sensor, semiconductorSensors, electrochemical sensorsExamination Scope:PM2.5: 0 to 999 micrograms/mPM10: 0 to 999 micrograms/mFormaldehyde: 0 to 9.999 mg/mTotal Volatile Organic Compounds: 0 to 9.9999 mg/mCarbon Monoxide: 0 to 5000 PPMCarbon Dioxide: 400 to 5000 PPMTemperature: 0 to 70 Humidity: 0 to 99% RHAQI: 0 to 999 .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Tester1 x Charging Cable (Color Random)1 x Manual