Adopting advanced CO2 sensors to monitor indoor carbon dioxide concentration in real-time, ensuring accuracy and stability Integrate temperature, humidity, and air indicators to provide comprehensive environmental data at a glance, helping users understand indoor air conditions Clear large screen display, simple operations, easy to set up and view data When the CO2 concentration exceeds the set threshold, sound and visual alarm will be triggered to remind users to take measures to improve air on the wall, saving desktop space, and suitable for various indoor environments such as bedrooms, living rooms, and offices, Manufacturer: Kelisdi