With its small 80x80mm ABS housing, this unit saves space and can be easily mounted in any room, allowing draft observation If CO2 readings overcome thresholds, the built in alarm activates sound and light indicators, prompting quick ventilation for air Store and review past air tendencies through the display or united application, helping monitor environmental changes over time in different indoor areas Equipped with a highly responsive detection component, this monitor furnishes real time CO2 measurement to keep indoor air within safe ranges, ideal for homes and offices The device simultaneously shows real time temperature, dampness, and CO2 readings on a clear, offering a full picture of your indoor environment, Manufacturer: Xuanxi