Fangrui Product Details Indoor Air Test Kits: This Versatile Indoor Air Quality Detector Can Accurately Measure Real-time Levels Of Aqi Co2 Hcho Tvoc Pm0.3 Pm1.0 Pm2.5 Pm10 Hcho Tvoc, Temperature Humidity, Alarm Clock And Timer. Additionally, You Can Check The Date/time And View Real-time Data Through The Mobile App. High Accuracy Real-time Data: With This Smart Sensor And Double Ventilation Structure Design, This Indoor Air Quality Monitor Delivers Precise Data Of Your Air Quality, Large Detection Range And Small Error,ensuring Your Peace Of Mind Regarding The Air You Breath. Remote Control In Your Hand: Use The Tuya App To Check Current Air Quality Readings, Analyze Trends Over Time And Set Alarms Timers. Get Timely Notifications And Tips To Improve Your Air. Check Your Local Pollen Forecast With Data From Tuya App. The Product Can Be Used With A Smart Plug To Control External Devices. For Example, If The Carbon Dioxide Concentration Exceeds 1500ppm, The Exhaust Fan Can Be Turned On For Ventilation; If The Carbon Dioxide C Designed For Modern Living