IAQ Analyzer Carbon Monoxide Measurement Range (PPM) - Carbon Dioxide Concentration 0 to 5000 ppm Temp Range 14 to 140 F Relative Humidity Range 0 to 99.9 Percent Dew Point Range -100 to 140F Wet Bulb Temperature Range 8 to 140F Oxygen Concentration - Humidity Accuracy +/-3 Percent Velocity Accuracy - Resolution - Display Large LCD Auto Power Off - Low Battery Indicator - Data Hold - Data Storage - Power Source 120 AC Adaptor Special Features Wall Mountable or Desktop