marevic Prefessionall Indoor Air Quality Monitor, 5 in 1 Portable Quality Tester for CO2 | TVOC | HCHO | Temp Gas Detector

【Multi-Function Air Quality Monitor】 This is a 5-in-1 indoor air quality monitor that accurately detects carbon dioxide (CO2), formaldehyde (HCHO), volatile organic compounds (TVOC), temperature, and humidity in real time. It helps you stay informed about the air quality in your living environment at a glance. 【Smart LED Color Screen】 Air quality tester equipped with a high-definition color screen for real-time data display, making it clear and easy to read. It provides an overall assessment of environmental quality and tracks the average value of each gas, helping you quickly identify unsafe gases in the air. In alarm mode, the screen changes color to remind you to pay attention to the environment. 【High Accuracy and Reliability】 Home air quality test built with high-performance chips and advanced infrared (NDIR) sensor technology for CO2 detection, as well as electrochemical sensors for HCHO and TVOC. It is more sensitive, accurate, and stable compared to ordinary sensors. 【Simple Operation】 Air quality sensor press and hold the "Power" button for 3 seconds to turn the air quality monitor on or off. Once powered on, it automatically starts detecting. The default temperature unit is Celsius (℃).When you need to switch the temperature unit, just click the button, and the temperature display will switch from Celsius(℃) to Fahrenheit(℉). 【Long-Lasting Battery, Portable Design】 Air monitor equipped with a built-in 1200mAh rechargeable lithium battery and a USB charging cable, it can last up to 8 hours on a single charge. Its lightweight and portable design make it suitable for various scenarios.