Indoor Air Quality Monitor, Smart Air Quality Tester for TVOC CO2 with Temperature and Humidity Monitoring for Home Office

[Clear LCD Screen] The large LCD screen clearly displays CO2 level, TVOC level, HCHO level, temperature, and humidity. [Portable and Rechargeable] Compact design with carrying case, built-in 1800mAh lithium battery, and easy charging via USB cable. [Customizable Settings] Switch between ℃ and ℉, with an adjustable alarm sound to suit your preferences. [Accurate and Reliable Sensor] Uses a digital temperature and humidity sensor for high accuracy, stable performance, and a long lifespan. [Judging Function] Equipped with an environmental quality judging function that displays appropriate values ​​based on the Measured values ​​displayed.