1、Simpler Works: Press and hold the power button for 3 seconds to turn on or off, and the surrounding environment can be automatically detected after turning on. 2、Broad Utility: Widely used in agricultural planting, greenhouse planting, production warehouse, material processing laboratory, family, etc. 3、Quick Testing: Small size, big function, 1 second a time real time refreshing, fast detection can obtain relatively stable measurement value. 4、Clear Display: Real time display of carbon dioxide concentration value per cubic meter Flashing light to display the interval level. 5、High Accurate: Using infrared detection technology to more accurately determine air quality problems. Item Type: Air Quality Monitor Material: ABS Battery: 3.7V li battery 1200mAh (built in) Application: Widely used in agricultural planting, greenhouse planting, production warehouses, material processing laboratories, families, etc. CO2 Detection Range: 400~5000PPM CO2 Detection Accuracy: 1PPM HCHO Detection Range: 0~0.6mg/m² TVOC Detection Range: 0~2.0mg/m² Temperature Detection Range: 0~50℃ Temperature Detection Accuracy: ±2℃ Humidity Detection Range: 0%~99%RH Humidity Detection Accuracy: ±8%RH 1 x Air Quality Monitor 1 x USB Data Cable 1 x User Manual