Portable Design: Made from lightweight yet wear resistant, this air tester is easy to carry and install, perfect for renters or mobile users who need frequent relocation of their Advanced Detections Features: Equipped with upgraded lithiums battery, Type C charging, and alarm function, this 5 in 1 air monitor provides real time alerts when pollutants exceeds safe levels for immediate action Multi Function Environment Monitor: Combining detections with temperature and humidity, this device provides comprehensive environmental data, ideal for labs or medical facilities requiring strict air Accurate Air: This CO2 detector precisely measures CO2, formaldehyde, and TVOC levels in real time with high sensitivity sensors, ensuring accurate data for homes and offices to maintain indoor air User Friendly Display Interfaces: Featuring a clear LCD screen, this detector is simple enough for children and elderly to operate, helping families maintain a environment, Manufacturer: Kaeltsyn