Accurate detection: The CO2 detector has low power consumption and long service life. Accurately detect carbon dioxide and understand air quality Detection range: Carbon dioxide carbon dioxide detector: 400-5000PPM, temperature measurement range: 0-50 C, humidity measurement accuracy: 2% Strong anti-interference power: the air quality meter is an air quality detector, adopts a detection module electrochemical, with good accuracy and stable performance Large-screen display: the air quality detector is larger than the large screen to display power, CO2, temperature and humidity, easy to use Wide range of applications: ideal air quality index detector for home, office, estate, hospital, school, indoor and outdoor The CO2 detector can detect carbon dioxide, large screen power display, features good accuracy, high performance. stable nce and strong anti-interference ability. It is convenient for us to detect gas and air pollution in homes, kitchens, bedrooms, offices, schools, cars, hotels, tourism and other places. 3. There is no need for valid accuracy after startup and auto-detection work. 1. Long press the power button on the right side (3 seconds) to turn the machine on and off. 2. Time setting, short press the power button, the flash bar jumps to the corresponding position, use the up and down keys. To set the correct time and date and switch, short press the power button to exit the setting. Package including 1 * Air Quality Meter