Multifunction, it can detect temperature, humidity, carbon dioxide. BT app, with storage for 1440 groups of data. Small and easy to carry. Carbon dioxide detection can be refreshed once per second, quickly measuring and obtaining a relatively stable measurement value. Large screen design, real-time monitoring, clear digital display, clear test results, the fastest detection, and accurate value. Widely used in home, office, agricultural planting, greenhouse vegetables, production warehouse, etc. If there are any problems, please contact our store in time. We will give you a satisfactory solution. Thank you for your understanding. Air quality is very important to our health, so you need an air quality detector to improve the quality of life. This product can detect CO2, temperature and humidity for you, BT app, with storage for 60 days * 24 groups = 1440 groups of data. Features: Multifunction, it can detect temperature, humidity, carbon dioxide. BT app, with storage for 1440 groups of data. Small and easy to carry. Carbon dioxide detection can be refreshed once per second, quickly measuring and obtaining a relatively stable measurement value. Large screen design, real-time monitoring, clear digital display, clear test results, the fastest detection, and accurate value. Widely used in home, office, agricultural planting, greenhouse vegetables, production warehouse, etc. If there are any problems, please contact our store in time. We will give you a satisfactory solution. Thank you for your understanding. Specifications: Item: 3 in 1 Carbon Dioxide Detector Main Material: ABS Color Optional: White/ Black Measurement Accuracy: 1ppm Measuring Range: 400-6000PPM Working Voltage: 3.7V Current: 120mA Power: 0.4W Battery: 3.7V, 1500mah Charging: 2-3 hours Working Time: 6-7 hours Size: 9*7*3.5cm Note: * There could be some deviations due to manual measurement or slight color difference owing to photographing conditions. Thank you for your understanding. Package Information: Package Size: 14.5*10*5cm Package Weight: 204g Gift Box Package Packing List: 1* 3 in 1 Carbon Dioxide Detector 1* Charging Cable 1* User Manual