Pollution Ventilation Temperature Real Time Calibration Review

HEALTHY AIR & HEALTHY PEOPLE: Precisely monitors indoor air quality - CO2, Temperature and Humidity in Real-Time. Uses non-dispersive infra-red sensor (NDIR) technology for most precise CO2 measurements. Monitor and maintain adequate ventilation levels by opening windows to draw outdoor air and reduce CO2 levels to 450-500 ppm or less. SAFETY FOR EVERYONE – Monitor public and private spaces for excess CO2 levels caused by large groups of people in an enclosed area exhaling CO2. CO2 or carbon dioxide serves as an accurate surrogate measure of risk for indoor transmissibility of airborne pathogens. As the number of people increases or ventilation decreases, CO2 levels will rise. Increase ventilation with outdoor air to reduce CO2 levels and risk of viral transmission within your indoor spaces. INTIMATE DESIGN: The backlight is too bright at night to disturb your rest? It's okay! you can press the➖button to turn off the backlight. The buzzer caused by high CO2 concentration is noisy? It's okay! You can press the ➕ button to turn off the buzzer. Worried about inaccurate co2 readings? It's ok! You can press the ⚪ button to enter calibration mode. SUITABLE FOR EVERYONE: Simple and beautiful large screen, simple operation, and even wall-mounted function, very suitable for you to use in school, office, home. Oh don’t forget, our other advantage is the battery capacity of 2400mAH, when USB charging is not available, the battery provides portable power. WHAT YOU GET: PTH-9C, Charging Cable, User Manual, One year warranty.And If you give it to others as a gift, you will get her/his compliments for you from her/his heart.