Compact, lightweight, and portable, this air detector is easy to carry anywhere. It utilizes high-precision semiconductor sensors for stable performance and accurate carbon dioxide detection. The electrochemical detection module ensures stable performance, anti-interference, low consumption, and a long lifespan. The backlit LCD screen clearly displays electricity, CO2, TVOC, HCHO, temperature, and humidity values. With real-time detection and automatic data updates, it offers versatile applications. Employing air convection and detection technology, it provides more precise results. No calibration is needed; simply power on for accurate carbon dioxide detection. Hundreds of ventilation holes on the casing accelerate air convection, ensuring efficient detection and excellent heat dissipation. Ideal for agricultural planting, greenhouse vegetables, production warehouses, material processing, business offices, and more. Name: Air Detector Battery: 1 * built-in lithium battery, 3.7V, 1200mAh (included) Display: LCD screen with backlight CO2 measurement ranges: 400ppm-5000ppm HCHO measurement ranges: 0-0.6mg/m3 TVOC measurement ranges: 0-2.0mg/m3 Temperature measurement ranges: 0 to 50°C Accuracy: 1°C Humidity measurement ranges: 0%RH-99%RH Accuracy: 5%RH Working temperature: 0-70°C Working humidity: 20%RH-90%RH Color: Black Material: ABS Size: 70 x 90 x 35mm Package Contents: 1 x Air Detector 1 x USB cable 1 x English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.