1、12 IN 1: Air quality meter can detect real time Air Quality Index, TVOC, PM2.5, PM10, CO2, humidity, temperature, date and time, clock, for tuya APP, Wifi, curve model, timer, in addition, you can also check the date, time and view real time data through the mobile phone APP 2、CLEAR DISPLAY: 12 in 1 air quality meter with large screen displays time, date and multiple environmental parameters, easy to read, realize real time comprehensive understanding of indoor conditions 3、MULTIPLE FEATURES: The air quality meter allows you to set WiFi calibration for TVOC and PM particulate matter and view the history curve for six metrics(TVOC, HCHO, PM2.5, PM10, CO2) 4、SMART AND ACCURATE: With smart sensors and double ventilation design, this indoor air quality detector provides accurate data on your air quality with a large detection range and small error, ensuring that you feel at ease with the air you breathe 5、REAL TIME DATA: The indoor air quality meter allows you to view current air quality readings using the for tuya APP, analyze trends over time, and set alarms and timers to get timely notifications and tips 6、SENSITIVE AND STABLE: The air quality meter is equipped with a high performance chip to ensure fast and accurate data. Advanced infrared(NDIR) sensor technology is used to detect CO2, and electrochemical sensors to detect HCHO and TVOC. Compared with ordinary sensors, it is more sensitive, more accurate and more stable 7、LONG LIFE: Portable air quality meter built in 1200mAh battery, can run continuously for 7 hours. Has a Type C charging port for easy charging via USB power. There are openings on both sides and back to form convective air, making real time convective detection more accurate 8、RUGGED AND PORTABLE: This air quality detector is made of quality ABS material, which is strong and wear prevention, not easy to damage, and has a long service life. The compact size(90 x 70 x 35mm) and lightweight (130g) design make it easy to carry and use in any environment Item Type: Air Quality Meter Display: LCD or TFT color screen digital display Working Voltage: DC5V/500mA TYPE C USB Sensor: PM2.5 infrared sensor or semiconductor sensor Battery: 1 x 3.7V rechargeable li ion battery 1200mAh Size: Approx. 90 x 70 x 35mm / 3.54 x 2.76 x 1.38in Charging Time: 4 Hours Standby Time: Approx. 300-360 minutes Weight: 130 g / 4.6 oz(approx.) Material: ABS 1 x Air Quality Detector 1 x User Manual 1 x Data Cable