This is a kind of quality air quality detector, compact size, lightweight and portable Adopts high accuracy temperature and humidity sensors, real-time detection, automatic refresh data, self calibration 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 planning, green house vegetables, production warehouse, material processing, home interval, business offices, and othersFeatures:Compact in size, lightweight and portable, easy to take out and carry around with youUse high accuracy temperature and humidity sensors, with fine interference resistance ability, stable working performance, with low power consumptionLarge LCD display with backlight, you can see the electrical quantity, CO2 value, TVOC value, HCHO value, temperature, and humidity clearly, and the backlight can be turned offAnd switchable, real-time detection, automatic refresh data, with multi useEquivalent with calibration button, press it for 5 seconds, the air quality data cleared after re set, accurate detectionWith the max data viewing function, you can press the "MAX" button to view the max data in the current test recordEquivalent with air quality level division function, 3 different words corresponding to different air quality levels, allowing you to more accurately and more graphic knowledge of the current air conditionsHundreds of cultivation holes reserved on the housing not only accelerate the conversion between the air and the machine, there is still achieving effective detection, but also providing a fine heat disturbance effectWidely applications: agricultural planning, green house vegetables, production warehouse, material processing, home interval, business offices, and othersSpecifications:Name: Air Quality DetectorMaterial: ABSSensors: digital T or H sensorsDisplay: LCD display with backlightBattery: 1 x build in lithium battery, 3.7V, 1000mAh (included)CO2 measuring ranges: 385ppm-2000ppmTVOC measuring ranges: 0.000 mg or m - 2.000 mg or m HCHO measuring ranges: 0.000 mg or m - 1.000 mg or m Temperature measurement ranges: 0 -90.0 or 32 -194 Humidity measurement ranges: 0-90 percent RHItem size: 177 x 79 x 40mm or 6.97 x 3.11 x 1.57inItem weight: 191g or 6.74ouncePackage size: 201 x 112 x 38mm or 7.91 x 4.41 x 1.50inPackage weight: 220g or 7.76ouncePacking List:1 x Air Quality Detector1 x Cable1 x Guidelines Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.