1、Carbon dioxide is refreshed in 1S/time in real time. The concentration of carbon dioxide is constantly changing. The detector has large screen design which is clear and easy to see 2、Under certain conditions, there will be large fluctuations. Fast measurement can obtain more stable measurement values. 3、High‑performance chip, more accurate and outstanding, accurately captures the weak current generated in the electrochemical reaction process, and accurately calculates the measurement results 4、Suitable for carbon dioxide detection, risk assessment, temperature and humidity detection, intelligent alarm system, gas detection algorithm, multiple suppression, air convection technology, greenhouse compensation calibration. 5、No need to calibrate after startup, work and automatic detection, simple to operate Item Type: CO2 Detector ℃ Material: ABS Uses: Can be widely used in homes, educational institutions, VIP sports venues, business offices, agricultural planting, greenhouse vegetables, production warehouses, raw material processing, etc. Carbon Dioxide Detection Range: 400~5000PPM Carbon Dioxide Detection Sensitivity: 1PPM TVOC Detection Range: 0-2PPM Temperature Measurement Range: 0~50℃ Temperature Measurement Accuracy: ±1℃ Humidity Measurement Range: 0%~99%RH Humidity Measurement Accuracy: ±2%RH Charging Method: DC 5V 500mA Type-C interface Battery: 1200mAh lithium battery x 1 (built-in) How to Use: 1. Press and hold the "on-off" button on the right for 3 seconds to turn it on and off, and then the current air quality parameters will be displayed. 2. CO2 Detector: Display the current CO2 data and temperature and humidity data, the colored ring will change according to the change of CO2 3. You can charge the USB by plugging in a 5V power supply. The battery icon flashes in the charging state and stops when it is fully charged. If the display is full but still flashing, it means the charging is not saturated. please wait a moment 1 x Detector 1 x Charging Cable 1 x Multilingual User Manual