Features Accurate testing: the detector has a built-in top sensor with multi-mode compensation algorithm for accurate and reliable measurement data. REAL TIME MONITORING: The detector can display the value of carbon dioxide concentration per cubic meter in real time, and the flashing light shows the level of the area it belongs to. EASY TO READ Each indicator has a color indicator under the number, giving you a glance view of indoor air quality and room temperature or humidity level. COMPACT AND PORTABLE: The detector is compact and can be carried in your pocket, taking up no space and making it easy to use at any time. HIGH RESOLUTION: The detector screen has high resolution and clear display, and the brightness can be adjusted automatically. Specification: Item Type: Air Quality Monitor Material: ABS Style: white semiconductor version Battery: 3.7V 1200mAh lithium battery (built-in battery included) Uses: Widely used in agricultural cultivation, greenhouse cultivation, production warehouses, material processing laboratories, families, etc. CO2 detection range: 400-5000ppm CO2 detection accuracy: 5PPM TVOC Detection Range: 0-2PPM Temperature sensing range: 0-50°C Temperature detection accuracy: ±1℃ Humidity detection range: 0% to 99%RH Humidity detection accuracy: ±2%RH Package list: 1 x Air Quality Monitor 1 x USB Cable 1 instruction Note: Product can not measure formaldehyde Package List 1 x Air Quality Monitor 1 x USB Cable 1 x Instruction