build and long service life Constructed with quality ABS and PC materials for durability. Smooth surfaces enable easy maintenance and reliable placement in any environment. Environmental monitoring at a glance Loud alarm and LED display alert you to indoor air quality in home or industrial settings. Automatic alarm deactivates when CO2 reaches 1000 ppm, prompting you to ventilate by opening a window. Effortless and accurate air monitoring Fast detection speed delivers realtime CO2 readings. Displays CO2 level on a date clock display that follows rapid airflow changes. Also detects temperature and humidity for stable, reliable monitoring. Advanced technology for 24hour insight Digital LED display provides clear and intuitive readings for continuous monitoring. LCD screen offers soft eye protection, with intelligent backlight that automatically adjusts brightness for comfortable viewing. Usage scenarios Home environments: living rooms, bedrooms, and home offices where monitoring CO2 helps maintain comfortable and healthy air quality. Workplaces and industrial settings: offices, warehouses, or laboratories where quick CO2 awareness, temperature, and humidity data support safety and comfort. Educational and public spaces: classrooms and conference rooms where timely alerts and clear readings facilitate prompt ventilation and better air quality management.