Ensure the air you breathe is safe and healthy with this advanced 5-in-1 Air Quality Monitor, designed to provide real-time, accurate detection of carbon dioxide (CO2) levels along with formaldehyde (HCHO), total volatile organic compounds (TVOC), temperature, and humidity. Equipped with a high-performance analysis chip, this CO2 detector precisely captures weak electrochemical signals for reliable readings without requiring any calibration. Key Features: · Real-Time 1-Second Updates: Continuously refreshes air quality data every second to keep you promptly informed of environmental changes. · Accurate Electrochemical Detection: Utilizes a sophisticated chip to accurately measure CO2 concentration by detecting weak currents generated through electrochemical reactions, ensuring precise and dependable monitoring. · Multi-Parameter Monitoring: Combines detection of CO2, HCHO, TVOC, temperature, and humidity in a single compact device, enabling comprehensive indoor air quality assessment. · Long-Lasting Battery Life: Powered by a 3.7V 1200mAh large capacity lithium battery, providing a standby time of approximately 240 to 360 minutes for extended use without frequent recharging. · Durable and Scratch-Resistant ABS Build: Constructed from high-quality ABS material offering excellent impact and scratch resistance, ensuring durability and environmental friendliness. · Intuitive Carbon Dioxide Indication: Features a clear color-coded LED system indicating CO2 concentration levels from safe (blinking green) to hazardous (four color flashes above 1999ppm), allowing quick visual assessment of air quality. · Portable and Lightweight Design: Compact size of approximately 9 x 3.5 x 7 cm (3.5 x 1.4 x 2.8 inches) and lightweight at about 106g (3.7 oz), making it easy to carry and place anywhere for continuous monitoring. Specifications: · Item Type: CO2 Detector · Material: ABS · Product Weight: Approx. 106g / 3.7 oz · Product Size: Approx. 9 x 3.5 x 7 cm (3.5 x 1.4 x 2.8 inches) · Battery: 3.7V Lithium Battery, 1200mAh Capacity · CO2 Indication Ranges:  - 0 to 799 ppm: Blinking Green  - 800 to 1199 ppm: Blinking Yellow  - 1200 to 1599 ppm: Blinking Orange  - 1600 to 1999 ppm: Blinking Red  - Above 1999 ppm: Four Color Flashes Package Includes: · 1 x CO2 Detector This 5-in-1 Air Quality Monitor is a reliable, easy-to-use solution for accurately tracking indoor air pollutants and environmental conditions. Its fast response time, durable construction, and multi-functional capabilities make it ideal for homes, offices, classrooms, and other indoor spaces where air quality matters.