Stable CO₂ Detection: Keep indoor air quality under control with this CO2 monitor for home. Dual infrared sensors measure CO₂ accurately between 400 and 5000ppm, while simultaneous temperature and humidity display ensures stable, clear, and easy-to-read indoor environment data Compact Portable Design: Our air quality monitor is lightweight and compact, weighing just 0.29 lbs (0.13 kg). Carry it easily in one hand, a pocket, or a bag, and instantly monitor air in classrooms, offices, greenhouses, or labs without worrying about space limitations or power access Extended Battery Life: Equipped with a 1000mAh battery, this indoor air quality meter operates continuously for 72 to 120 hours. Its extended runtime minimizes frequent charging, making it ideal for long-term mobile monitoring in offices, classrooms, greenhouses, or outdoor environments Instant Air Monitoring: Track indoor air instantly with this CO2 carbon dioxide detector. A high-sensitivity infrared sensor measures CO₂ in real time, while multi-color indicators visually guide ventilation decisions, making indoor air conditions easy to monitor at a glance Easy Device Control: Start monitoring immediately with this VEVOR carbon dioxide detector. No complex setup is required—just power on and wait 10 seconds. Large display shows CO₂ concentration, temperature, and humidity, and user-friendly buttons ensure smooth, quick operation