Feature:1. Real Time Monitoring: Real time monitoring and display of carbon dioxide concentration, air humidity, temperature per cubic meter, easy to understand air quality2. LCD Screen: Large LCD screen display, real time display of various air data, clear numbers, easy to identify and read3. Alarm Function: When the gas concentration exceeds the warning value, an alarm is automatically triggered, and the screen color is changed to remind the user4. Easy to Install: It is small and portable, easy to carry, it does not take up too much space, and can be installed at home, office and classroom5. Wide Application: Suitable for office, home, gymnasium and other usage scenarios CO2 concentration and air quality detectionSpecification:Item Type: Air Quality DectorModel: 2CO1TMaterial: ABSBattery: 18650 1500mAh 3.7V (built in battery)Charging Power Supply: DC 5V 500mA Micro USBPurpose: Suitable for carbon dioxide concentration detection in offices, homes, gymnasiums and other usage scenariosCO2 Measurement Range: 400-5000 PPM 50 5%PPMCO2 Measurement Accuracy: 1PPMTVOC Measuring Range: 0-2.0mg/mHCHO Measuring Range: 0-0.6mg/mTemperature Measurement Range: -10~50Temperature Measurement Accuracy: 2Humidity Measurement Range: 0%~99%RHHumidity Measurement Accuracy: 3%RH.Package List:1 x Air Quality Detector(built in battery)1 x USB Cable1 x ManualNote:1. Please use a standard DC5V charger to operate, and do not block the air inlet and outlet to avoid value deviation.2. Do not use it frequently in a dusty environment with poor air quality to prolong its service life.3. Do not use the device near high temperature, high humidity, dirt, or strong magnetic fields to avoid inaccurate values or internal circuit failure.4. The device can be used in the temperature range of 10~45.5. Store the equipment and accessories in the temperature range of 20~55. When the ambient temperature is too low or too high, it may cause equipment failure.6. Please avoid exposing the equipment and accessories to rain or moisture, otherwise it may cause failure or risk of the display, battery, casing and circuit.7. Do not insert sharp objects such as pins into the air inlet, outlet or charging space to avoid damage to the device