The Extech CO250 is a portable indoor air quality (IAQ) CO2 meter designed to measure and monitor carbon dioxide (CO2) levels in indoor environments. This handheld instrument combines accuracy, convenience, and user-friendly features, making it an essential tool for professionals in HVAC, facilities management, and environmental monitoring.The Extech CO250 utilizes non-dispersive infrared (NDIR) sensor technology to detect and quantify carbon dioxide gas. It provides real-time measurements of CO2 levels in parts per million (ppm), allowing users to quickly assess the air quality and ventilation effectiveness in indoor spaces.The instrument features a clear LCD display that shows the current CO2 level, along with additional information such as temperature, humidity, and measurement units. The display may also include visual and audible alarms to alert users when CO2 levels exceed predetermined thresholds, ensuring proper ventilation and air quality management.The Extech CO250 offers multiple measurement modes to suit different applications. Users can select between continuous measurement mode for real-time monitoring or single measurement mode for spot checks. The instrument may also feature a data hold function to freeze the reading on the display for easy recording and analysis.Designed for ease of use, the Extech CO250 is compact and lightweight, making it easy to carry and operate. It is typically powered by batteries, ensuring convenience and allowing for on-the-go measurements in different indoor locations. The instrument may come with additional features such as a built-in data logger for recording CO2 levels over time.The Extech CO250 is suitable for a wide range of indoor applications, including office spaces, schools, hospitals, and residential buildings. Monitoring CO2 levels is crucial for ensuring optimal indoor air quality, comfort, and productivity, as elevated CO2 concentrations can lead to symptoms such as drowsiness, poor concentration, and discomfort.