Description Type1: This is a kind of quality air quality detector, compact size, lightweight and portable. Adopts most high accuracy TVOC sensors, real-time detection, automatic refresh data, with multi-use. Large LCD display, you can see the electricity quantity, CO2 value, TVOC value, HCHO value, temperature, and humidity clearly. Widely applications: agricultural planting, greenhouse vegetables, production warehouse, material proceing, home interior, busine offices, and etc.. Features: Compact in size, lightweight and portable, easy to take out and carry around with you. Adopts most high accuracy TVOC sensors, real-time detection, automatic refresh data, with multi-use. Large LCD display, you can see the electricity quantity, CO2 value, TVOC value, HCHO value, temperature, and humidity clearly. and switchable, with stable detection performance, antijamming ability, low consumption and can provides long service time. Equipped with air quality level division function, four different colors correspond to different air quality levels, allowing you to more accurately and more graphicly know the current air conditions. Hundreds air vents on the outshell, not only speed up the convection between air and machine to get effective detection but also provides fine heat radiation effect. Widely applications: agricultural planting, greenhouse vegetables, production warehouse, material proceing, home interior, busine offices, and etc.. Specifications: Name: Air Quality Detector Material: ABS Battery: 1 * built-in lithium battery, 3.7V, 1200mAh (included) CO2 measuring ranges: 400ppm-6000ppm Item size: 90 * 70 * 35mm / 3.54 * 2.76 * 1.38in Item weight: 100g / 3.53ounce Package size: 145 * 125 * 45mm / 5.71 * 4.92 * 1.77in Package weight: 200g / 7.05ounce Packing List: 1 * Air Quality Detector 1 * Guideline Type2: Features: Intelligent carbon dioxide value tester uses air semiconductor-sensor to monitor temperature and humidity of air quality. Adopts superior electrochemical detection module, with high accuracy, stable performance, can accurately detect carbon dioxide value. Strong anti-interference ability, low consumption and long service life. The product does not need calibration, it can be tested after booting, and it can accurately detect carbon dioxide. Different colors corresponding to different air quality, suitable for office, family, and other occasions. Hundreds of ventilation holes at the back of housing not only accelerate the convection between the air and the machine, thereby realizing effective detection, but also provide a fine heat diipation effect. Widely applications: agricultural planting, greenhouse vegetables, production warehouse, material proceing, home interior, etc. 5in1: The large screen displays the power, CO2 value, TVOC value, HCHO value, temperature and humidity. Note: The new machine needs to be ventilated for 24 hours to ensures accurately measurement,and the product will work normally. Specifications: Name: Air Quality Detector Battery: 1 * 3.7V, 2000mAh lithium battery (included) 5in1: CO2 Detection-Range: 400-5000 PPM, +50 +5%PPM CO2 Detection Sensitivity: 1PPM TVOC Detection-Range: 0-2.0 mg/m HCHO Detection-Range: 0-0.6 ma/m Temp Measurement-Range: -10 to 50 Temp Measurement Accuracy: 1 Humidity Measurement-Range: 0%-99%RH Humidity Measurement Accuracy: 2%RH Item Size: 90 * 70 * 40mm / 3.54 * 2.76 * 1.57in Package Size: 138 * 95 * 47mm / 5.43 * 3.74 * 1.85in Package Weight: 150g / 5.29ounce Packing List: 1 * Air Quality Detector 1 * Cable 1 * User Manual Type3: Features: Compact in size, lightweight and portable, easy to take out and carry around with you. Uses high accuracy semiconductor sensors, with stable working performance, can accurately detect carbon dioxide value. Adopts electrochemical detection module with stable detection performance, anti-interference ability, low consumption and can provides long service time. Large LCD color display with backlight, you can see the electricity quantity, CO2 value, TVOC value, HCHO value, temperature, and humidity clearly. Real-time detection, automatic refresh data, with multi-use. The product does not need calibration, it can be tested after booting, accurate detect and with sound-light alarm function. Equipped with air quality level division function, 4 different colors correspond to different air quality levels, allowing you to more accurately and more graphic know the current air conditions. Hundreds of ventilation holes reserved on the housing not only accelerate the convection between the air and the machine, thereby realizing effective detection, but also provide a fine heat diipation effect. Wall-mounted design, it reserves two hung holes on the back of the machine, which makes it applicable to more scenarios and applications, with strong practicability. Widely applications: agricultural planting, greenhouse vegetables, production warehouse, material proceing, home interior, busine offices, and etc..