Ten portable air quality testers are equipped with a high-power sensor that ensures stable performance and effect. Supports detection during detection of air quality, formaldehyde, organic substances, PM2,5, PM10, oxygen and gases, temperature and humidity. The porous 3D housing was created with multiple ventilation holes, regulators of air circulation convection over time. The sensor ma full contact with the air, making it very sensitive and detectable in detecting contents. This device is suitable for various occasions. Characteristics: (Compact size and remote application control Tuya): The compact design of this CO2 detector in text with a simple and stylish design makes it lightweight and easy to carry. Wall mount design, includes multiple power supplies to play data over time. WIFI allows you to view data while using your mobile phone via the Tuya or SmartLife app. (Multi-functional design): This ma multifunctional design, supporting the detection of air quality, formaldehyde, organic, PM2,5, PM10, carbon monoxide, temperature and humidity, allowing you to know the quality around the air of you wherever you are. It also has a time curve view that allows you to view trend curves covering group parameters: HCHO, TVOC, PM2,5, PM10, carbon monoxide, CO2, temperature and drives. (Air quality classification and intelligent alarm): For the circuit breaker device with bright TFT display with center 2,8 inch, which contains test results and support switching between interfaces. The use of air quality in the use, a device using four different results of application of air quality levels, which allows for accurate and effective checking of current air conditions. It also has an audible alarm function, which allows complications to occur in the event of an occurrence. (Accurate Detection): It features a porous 3D housing with multiple vents that facilitate air circulation and convection during operation. This design ensures contact with the sensor from the air, its sensitivity and revealing the risk of infection. (Wide Application): Built-in high capacity 1200mAh lithium battery and long-lasting Type-C charging port, powered by various power supply devices. It is widely available in various environments, in these homes, greenhouses, camping barbecues, factories, cars, etc. Technical data: Name: Tester air quality Material: ABS Color: Black, White (Any) Battery: 1 * built-in 2500 mAh lithium battery (included) Weekly Voltage: 5 V Charging mode: Type-C 500 mAh interface PM2.5: 0-999 ug /m3 PM10: 0-999 ug /m3 HCHO: 0-9 999 mg/m3 VOC: 0-9 999 mg/m3 Carbon monoxide: 0-1000 PPM CO2: 0-5000 ppm AQI: 0-500 Temperature: 0-70 ℃ Humidity: 0-99% relative humidity Product Size: 70*35*90mm/2,76*1,38*3,54inch Item Weight: 130 g / 4,59 oz Package Size: 145 * 100 * 48 mm / 5,71 * 3,94 * 1,89 inch Package Weight: 200 g / 7,05 oz List of things to pack: 1 * Tester air quality