Indoor Air Quality Analyzer Carbon Monoxide Measurement Range (PPM) - Carbon Dioxide Concentration 1 to 6000 ppm Temp Range -4 Degrees to 140 Degrees F Relative Humidity Range 10 to 95 Percent Dew Point Range - Wet Bulb Temperature Range - Oxygen Concentration - Humidity Accuracy - Velocity Accuracy - Resolution 1 ppm Display Back Lighted LCD Auto Power Off - Low Battery Indicator Yes Sensor Life - Data Hold Yes Data Storage 20 000 Continuous Readings 99 Manual Readings
