RYRA Multifunctional CO2 Meter Digital Temperature Humidity Tester CO2 sensor 1.9inch TVOC HCHO CO2 Detector Air Quality Monitor Name: Air Quality Detector Material: ABS Color: black, white Battery: built-in 1 * 700mAh battery (included) Display screen: 1.9 inch color display screen Working voltage: 3.7V Warm-up time: 35s Frequency data refresh: 2s Detection range: 0-9.999mg/m Operating humidity: 0-95% RH Operating temperature: - 10 to 50 Charging method: Type-C interface Product size: 50.6 * 85 * 17mm Specifications: 1.1.9 inch precision and clarity, color display, 240 * 280 resolution, HCHO, TVOC, CO2, temperature and humidity are more intuitive and readable. 2.Equipped with high-precision semiconductor sensors, it can accurately identify and capture various pollutants in the gas, making real-time concentration of HCHO, TVOC, and CO2 in the gas more accurate. 3. Adopt excellent temperature and humidity sensors, with good anti-interference ability, ensuring the measurement accuracy of various indicators, stable working performance, and low power consumption. 4. Built-in high sensitivity intelligent air quality detection chip ensures more accurate instrument detection. 5. Equipped with an air quality level separation function, four different font colors correspond to different air quality levels, allowing you to more accurately and vividly understand the current air condition. 6.The hundreds of fixed ventilation holes on the fuselage can not only accelerate the convection between the air and the machine, improve the air transmission rate to ensure effective detection, but also provide greater heat dissipation effect. 7.Widely used: agricultural planting, greenhouse vegetables, production warehouses, material handling, household indoor, office, etc. Package Included: 1 * Tester undefined