1、Compact in size, lightweight and portable, easy to take out and carry around with you. 2、Uses high accuracy semiconductor sensors, with stable working performance, can accurately detect carbon dioxide value. 3、Adopts electrochemical detection module with stable detection performance, anti-interference ability, low consumption and can provides long service time. 4、Large LCD display with backlight, you can see the electricity quantity, CO2 value, TVOC value, HCHO value, temperature, and humidity clearly. 5、Real-time detection, automatic refresh data, with multi-use. 6、Adopts air convection and accurate detection technology, which can provides more accurate detection results. 7、The product does not need calibration, it can be tested after booting, and it can accurately detect carbon dioxide. 8、Widely applications: agricultural planting, greenhouse vegetables, production warehouse, material processing, home interior, business offices, and etc..