Features 1、CONCENTRATION DISPLAY WITH FLASHING LIGHT: Real time display of carbon dioxide concentration value per cubic meter, flashing light to display the interval level 2、SMICONDUCTOR DETECT AIR QUALITY: Using semiconductor detection technology, which can determine air quality problems more accurately, very practical 3、AUTOMATIC DETECT: press and hold the power button for 3 seconds to turn it on or off. After starting up, place it in a ventilated place for 20 minutes until the data is stable, and then place it in the place to be detected for detection. 4、FAST DETECTION WITH STABLE VALUE: Small size with big function, 1S per time real time refreshing, fast detection can obtain relatively stable measurement value 5、FOR PLANTING AND LABORATORY: Widely used in agricultural planting, greenhouse planting, production warehouse, material processing laboratory, family, etc. Specification Item Type: CO2 Detector Model: H8 Plus Material: ABS Battery: 3.7V lithium battery 1200mAh (built in) Uses: Widely used in agricultural planting, greenhouse planting, production warehouses, material processing laboratories, families, etc. Basic Parameters: CO2 Detection Range: 400~5000PPM CO2 Detection Accuracy: 1PPM Temperature Detection Range: 0~50℃ Temperature Detection Accuracy: ±1℃ Humidity Detection Range: 0%~99%RH Humidity Detection Accuracy: ±5%RH Package List 1 x Detector 1 x USB Data Cable 1 x User Manual