【Product Features】 🌡️ 7 Sensors : Continuous detection of 7 indicators including carbon dioxide (CO2), carbon monoxide (CO), particulate matter (PM2.5), formaldehyde (HCHO), total volatile organic compounds (TVOC), humidity, and temperature. Sensors can be adjusted based on needs. 📊 4-in-1 : Continuous monitoring device, automatic report center, cloud server, and intelligent ventilation interaction-four devices combined. 🛡️ 3 Patents : Includes patents for the indoor air quality detection system, a 7-segment display device, and the cloud data collection and warning system. 🔧 2-in-1 Installation : Wall-mounted and portable, making it easier to inspect air quality and adjust monitoring points. 👆 1-Touch Control : User-friendly interface allows you to view real-time or average reports from any connected device with just one touch. 🇹🇼 Taiwan Excellence : 100% Taiwan-designed and manufactured, CE, FCC, and RoHS certified, with a durable stainless steel case. 📥 Quick Access : Web-based trend charts available for download in 60 seconds, and record data in 30 seconds. 【Applicable Locations】 🏢 IAQ public space displays 💼 Office 🚉 Stations ✈️ Airports 🏛️ Museums/Galleries 🏥 Hospitals 🏠 Residential 🚶 Inspection