Alerts and Visual Warnings: Connect the household co co2 tvoc hcho tester to WiFi and set alarm values as When measurements exceed the set standards, the device emits three urgent beeps and changes interface colors (green for good, orange for warning, red for bad), ensuring immediate response with clear visual alerts. Comprehensive Air Quality Detection: This air quality detector is a 15-in-1 device that measures , CO, CO2, PM0.3, PM1.0, PM2.5, PM10, formaldehyde (HCHO), TVOC, temperature, and humidity. It also features time display, alarms, , and countdown functions, providing a complete solution for your air quality needs. Customizable Settings and Historical Data Review: The portable pm0.3 pm1.0 pm2.5 pm10 tester supports custom alarm limits, sleep mode settings, and detailed historical data exploration (by day, month, or year). The app offers a user-friendly interface with temperature unit switching and multifunctional timer settings for a personalized and convenient experience. TFT Color Display and App Control: The indoor air quality monitor comes with a 2.8-inch TFT color screen, allowing you to see the at a glance. With the Tuya app, you can enjoy real-time air quality monitoring and remote management from anywhere. Smart Linkage Control: Featuring semiconductor sensors for accurate measurements, the temperature humidity meter can connect to to control external devices. For example, set the exhaust fan to turn on when CO2 levels exceed 1500ppm and off when levels drop below 800ppm, saving . Ideal for homes, schools, hospitals, kids' rooms, hotels, restaurants, cars, and more., Weight: 1.2566348934 pounds, Manufacturer: Oewwthy