【Portable and Lightweight】This detector is compact and easy to carry, allowing for air quality monitoring anytime, anywhere. Its lightweight design facilitates convenience and use in various locations. 【Accurate Measurement】Equipped with a meter, this detector provides precise measurement of carbon dioxide levels in the surrounding environment. 【Manual Alarm Threshold】Users can easily set the alarm threshold according to their preferences or specific needs. This allows for customization of the detection range and timely al-erts when levels exceed the set limit. 【Easy to Use】Featuring a user-friendly interface and manual set functions, this detector is simple to operate. Navigating through the settings and adjusting parameters is effortless. 【Versatile Application】Suitable for various environments, such as homes, offices, classrooms, and more, this air quality monitor provides valuable information to for ENSURE the health and safety of occupants.