What it measures Realtime monitoring of CO2, TVOC, HCHO (formaldehyde), humidity, and temperature for indoor spaces. Key benefits — why you need it Detect hidden airquality risks: measures CO2 and VOCs to help identify poor ventilation, chemical contamination, and potential health concerns. Confident readings: the device's design allows better heat dissipation during operation, preventing overheating and producing more stable measurement data. Longlasting operation without frequent battery changes: a 1200 mAh rechargeable battery reduces interruptions and worry about low power. How it solves problems Prevents guesswork about indoor air: instead of relying on smell or comfort alone, you get objective numeric values for CO2, TVOC, HCHO, humidity, and temperature. Stable performance during extended monitoring: improved heat management maintains sensor stability and accuracy over time. Portable, rechargeable power: the builtin 1200 mAh battery supports extended use without constant access to an outlet. Important usage notes for accurate results This monitor is intended for indoor use only. Close doors and windows before testing to avoid external airflow affecting measurements. For reliable readings, place the device in the testing area and let it run continuously for at least 60 minutes before recording data. Charge the battery before long monitoring sessions to ensure uninterrupted operation. Compatibility and performance Designed for typical indoor environments such as homes, apartments, offices, classrooms, and other enclosed spaces. Monitors multiple parameters simultaneously to give a comprehensive picture of indoor air quality. Rechargeable battery provides convenient and repeated use without disposable batteries. Practical use scenarios After bringing furniture or flooring home, run the monitor in the living room to check HCHO and TVOC levels while the area airs out. In offices or meeting rooms, monitor CO2 and humidity to determine when ventilation is needed to maintain comfort and alertness. In a nursery or bedroom, check VOC and formaldehyde levels regularly to reduce exposure to chemical offgassing from paints or furnishings. What to expect Objective, actionable airquality values for CO2, TVOC, HCHO, humidity, and temperature. Stable measurements supported by a heatdissipating design and a rechargeable 1200 mAh battery. Clear guidance for achieving accurate indoor readings: close windows and doors and allow at least 60 minutes of continuous monitoring before interpreting results.