CO2 handheld meter, CO2 measuring device. Humidity and temperature. Stores up to 18,000 measurement values. Displays maximum, minimum, and average values. Adjustable acoustic and visual CO2 alarm. Includes reading and configuration software. The CP11 handheld meter is a practical multi-measuring device that simultaneously measures and records CO2, humidity, and temperature. Additionally, it calculates the dew point and wet bulb temperature. Equipped with the ROTRONIC HYGROMER IN-1 humidity sensor, which has been tested and validated in the field for years, this measuring device offers optimal performance. With the ROTRONIC software SW21, the device can be customized to meet customer requirements. Data can be downloaded, stored, and analyzed. Various application areas. The CP11 data logger assesses air quality through a combined measurement of CO2, humidity, and temperature. It is particularly suitable for analyzing air quality in underground garages, general public spaces such as classrooms, or in bottling plants for monitoring purposes. A high concentration of carbon dioxide can cause fatigue and lack of concentration. Elevated CO2 levels can quickly occur when multiple people are in enclosed spaces with poor ventilation. Carbon dioxide (CO2) is a colorless and odorless gas that exists in the Earth's atmosphere and can be dangerous in high concentrations. The CO2 content in natural ambient air is about 0.04% or 400 ppm. When humans and animals exhale this gas, it quickly mixes with the surrounding air. An increased CO2 level manifests in humans as quicker fatigue and a growing inability to concentrate.