The air quality meter is specially designed for long-term monitoring of climatic conditions in, for example, offices, classrooms or lecture halls. The air quality meter is equipped with various sensors. Parameters / Measuring ranges: - Temperature: 0 … +50 C / 32 … 122 F - Ambient humidity: 0 … 100% RH - Atmospheric pressure: 300 … 2000 hPa - CO2: 0 … 40000 ppm - 32 GB data storage - E-paper display with histogram display - Good / medium / bad rating - Battery life: approx. 10 months