Brand New in the Box. This CO2 detector by LFF is a must-have for monitoring indoor air quality. It accurately detects carbon dioxide levels in the air and provides real-time data to help ensure a healthy and safe environment. The compact design makes it easy to place in any room, and the black color fits seamlessly with any decor. With package dimensions of 4.33x4.33x1.77 inches and weighing only 0.51 pounds, it is a convenient and portable solution for measuring CO2 levels. Ideal for use in a variety of settings, including homes, offices, and industrial environments.