Portable Carbon Dioxide Meter Best Air Quality Monitor dectect Carbon Dioxide, Temperature, Humidity for Home, Office or School

3-In-1 CO2 Detector：Portable and easy to use, this 3-in-1 detector monitors CO2 levels (400-5000 ppm), temperature (0-50℃), and humidity (0-99% RH). Perfect for homes, offices, schools, warehouses, and agricultural use. Clear LED Display for Easy Readings：The large, full-color LED screen clearly shows CO2, temperature, and humidity levels, ensuring easy visibility and eye comfort. 5-Stage CO2 Monitoring with Alarm：Tracks CO2 levels across 5 stages (Good to Very Unhealthy). Alarms when levels exceed 1500 ppm, helping you maintain healthy air quality. Auto Brightness Adjustment：The screen brightness adjusts automatically to suit lighting conditions, ensuring clear visibility without glare. Smart Wake-Up Function：The distance sensor wakes the screen when you approach or wave your hand. Customize settings via the app for added convenience. A practical and efficient tool for monitoring and improving indoor air quality.