1.8-inch LCD Indoor Air Quality Monitor with WiFi and NDIR CO2 sensor. This compact unit measures CO2, PM2.5, PM10, PM1.0, HCHO, TVOC, temperature and humidity, with a clear LCD display and control via the Life app. Real time monitoring: view live gas concentrations on your phone through WiFi. The screen can be turned off or dimmed to reduce distraction while data updates instantly on the app. Alarm function: three color levels keep you informed at a glance — green (safe), orange (poor), red (unhealthy). An audible alarm activates when any reading exceeds your set threshold. Power and operation: powered by a USB Type-C connection; up to 2 hours of standalone operation on a full charge. For continuous use, keep the device plugged in to power. Key benefits: provides a single, easy to read source for multiple air quality metrics; remote monitoring and alerts improve safety and comfort; compact, appliance-friendly design for home, office or dorm environments. Use scenarios: - At home during cooking or gatherings to track CO2 and PM levels and respond quickly. - In an office or classroom to maintain acceptable air quality and trigger timely alerts. - In a bedroom or study to support better sleep and focus by monitoring ambient conditions.