Product Introduction: Temperature & Humidity: Humidity Clearly display the detected real-time temperature and humidity. Air Quality Index: Adopts superior detection module, with high accuracy, stable performance, can accurately detect air quality values. Allowing you to more accurately and more figuratively know the current air conditions. PM2.5&PM10: and PM10 have become the primary pollutants in ambient air pollution, please pay attention to the monitoring of PM2.5 and PM10. LCD Screen: The large LCD screen displays time, temperature and humidity, carbon dioxide, PM2.5, PM10 and AQI clearly. , Use in multiple scenarios: Widely using in multiple scenarios: greenhouse vegetables, business offices, house life, production warehouse and etc... Specification: Product Model: PTH-9AW Air Quality Level (AQI): 0 ~ 500 Carbon Dioxide: 400 ~ 5000 ppm [±(50ppm + 5%)] Temperature: -10°C ~ 40°C (±1.5℃) / 14℉ ~ 104℉ (±2.7℉) Humidity: 20 ~ 99 % RH (±5 % RH) PM10: 0 ~ 1000 μg/m³ (±10%) PM2.5: 0 ~ 1000 μg/m³ (±10%) Wireless Connection: Wi-Fi (only for 2.4GHz network) APP: TUYA Battery: Li-ion Cylindrical Battery/1Li-ion 18650C (2400mAh) Input: 5 V⎓1A Note: You can only switch the temperature unit and 12/24 hour timedisplay format in the TUYA APP. Material: plastic colour: black Package Contents: 1 x PTH-9AW CO2 Detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.