Features 5-in-1 CO2 Meter: This product is a multifunctional 5-in-1 CO2 meter that can measure CO2, temperature, humidity, and TVOC levels in the air. Digital Temperature and Humidity Tester: The digital temperature and humidity testing function of this product allows precise measurement of these parameters and ensures that you can maintain a comfortable environment. CO2-TVOC-HCHO Detector: With the ability to detect CO2, TVOC, and HCHO, this product is perfect for monitoring air quality in your home or office. Air Quality Monitor: This product is an air quality monitor that can help you identify all air problems in your room so that you can take steps to improve the air quality.
eBay