Providing a comfortable, safe and healthy indoor environment is an increasingly important concern. Good air quality increases concentration and productivity. It can also reduce lost days due to absence. TSI's Q-TRAK™ Indoor Air Quality Monitor 7575 provides quick, accurate information to assess key indoor air quality (IAQ) parameters. Simultaneously displays CO2, CO, temperature, and humidity measurements. Calculates dew point, wet bulb, and percent outside air. Large graphic display for viewing up to 5 measurements. On-screen messages and instructions. Supports 12 different languages. One instrument with multiple plug-in probe options including VOCs and air velocity. Store up to 39 days of data collected at one-minute log intervals. TRAKPRO™ software provided for data logging, analysis, and documenting results. Bluetooth communications for transferring data or remote polling.