Features: 1. Smart CO2 Monitoring – Uses an advanced air semiconductor sensor to track carbon dioxide levels, temperature, and humidity in real time. 2. High Accuracy & Stability – Equipped with a premium electrochemical detection module for reliable, precise readings every time. 3. Energy-Efficient & Durable – Low power consumption, strong anti-interference ability, and a long-lasting design for everyday use. 4. Ready to Use, No Calibration Needed – Just turn it on and start detecting CO2 immediately—no complicated setup required. 5. Optimized Airflow Design – Features multiple ventilation holes on the back for better air circulation, faster detection, and effective heat dissipation. Product Details: This 3-in-1 air quality monitor gives you clear, real-time data on CO2, temperature, and humidity. Built with a high-performance sensor and sturdy plastic housing, it delivers accurate results without needing calibration. The back ventilation design improves airflow and heat dispersion, while the simple operation makes it easy for anyone to use. Ideal for keeping track of air quality in greenhouses, warehouses, workshops, grow rooms, and more. Specifications: - Product Name: Air Quality Detector - Color: White - Material: Plastic - Power: USB powered Package Includes: - 3 × Carbon Dioxide Detectors - 3 × USB Cables - 3 × English Manuals Only the items listed above are included. Slight color variations may occur due to lighting or screen differences. Measurement tolerance: ±1–3 cm.