Air quality is vital to our health, thus an air quality detector is necessary for improving the quality of our life. This product is able to detect CO2, temperature and humidity, multifunctional and easy to use. Features: Multipurpose: it can detect temperature and humidity, CO2 level in real-time, and display intuitively in a large screen, fast and accurate. Compact and portable:it is small in size and easy to carry, so you can take it to places where air quality needs to be monitored. Function: With intelligent alarm system, ga-s recognition algorithm, multiple anti-interference, air convection technology and greenhouse compensation calibration. Accuracy: Equipped with high-performance chip that can capture the weak current generated during the electrochemical reaction and deliver accurate measurement.CO2 detection can be refreshed every second. Wide applications: farming, greenhouse vegetables, production warehouse, raw material processing and so on. Specifications: Material: ABS Color: black, white(optional) CO2 detection range: 400-5000 PPM Resolution: 10PPM Accuracy: ≤0.2ppm Sensitivity: 0.45±0.15ma/ppm Anti-interference: 47.22% Response time:≤60s Temperature measurement range: -10~70 Temperature neasurement accuracy: ±1 Humidity measurement range: 0%~99%RH Humidity measurement acuracy: ±2%RH Power adapter: DC5V 1A micro USB interface Working voltage: 3.7V Battery: 1 * lithium battery, 1200mAh(included) Item size: 90 * 70 * 40mm / 3.5 * 2.8 * 1.6in Package size: 92 * 72 * 42mm / 3.6 * 2.8 * 1.7in Package weight: 260g / 9.2ounce Packing List:(optional) 1 * Air Quality Detector 1 * USB Cable 1 * User Manual