Why you need this device Maintain a healthier, more comfortable indoor space by tracking temperature, humidity and carbon dioxide—three key factors that affect sleep, breathing, and overall comfort. Detect rising CO2 and uncomfortable humidity levels before they cause headaches, poor concentration, dry air, or mold risk. Get clear, actionable information in real time so you can decide when to ventilate, run humidifiers/dehumidifiers, or adjust HVAC settings. What it does and how it stands out 9-in-1 indoor air quality tester that monitors temperature, humidity and carbon dioxide levels with a compact, portable design for easy placement around the home or workplace. Uses proven infrared and electrochemical sensor technologies to deliver fast, reliable readings and reduce false measurements from environmental noise. One-button calibration keeps the sensors accurate with minimal effort—press once to recalibrate and restore trusted performance. Key attributes Function: Continuous, real-time monitoring of temperature, humidity and CO2 to help you manage indoor air quality. Performance: Rapid updates and stable readings thanks to advanced infrared and electrochemical sensing methods. Usability: Simple interface with a one-button calibration that anyone can operate without tools or technical setup. Form factor: Compact and lightweight for tabletop or shelf placement; designed for everyday indoor use and easy relocation as needs change. Compatibility: Intended for indoor environments—homes, offices, classrooms, and other enclosed spaces where air quality matters. Practical use scenarios Nursery or bedroom: Monitor CO2 and humidity to improve sleep quality and reduce dry or stuffy air for infants and adults alike. Office or meeting room: Keep CO2 levels in check to support alertness and cognitive performance during long meetings or workdays. Classroom or daycare: Track ventilation effectiveness and humidity to create a safer, more comfortable learning environment for children and staff. How it helps you act Real-time alerts and readable metrics let you take immediate steps—open a window, run an air purifier, or adjust HVAC and humidification—to maintain healthy air. Reliable, repeatable readings reduce guesswork so facility managers and homeowners can plan corrective actions with confidence. What to expect in everyday use Quick setup: place on a flat surface, power on, and start monitoring. Low maintenance: periodic one-button calibration keeps sensor accuracy without complex procedures. Consistent feedback: continuous measurement lets you see trends and confirm that corrective actions are effective. This 9-in-1 indoor air quality tester combines targeted measurements, robust sensing technologies, and simple calibration to make it practical for regular use in homes, offices, and classrooms where air quality matters.