Particle Counter Particle Size 0.3 0.5 1.0 2.5 5.0 and 10 um Flow Rate 0.1 cfm Relative Humidity Range 0 to 100 Percent Concentration Range 2 000 000 p/cf Sensitivity Not Applicable Temp Range 32 Degrees to 122 Degrees F Display Color Display Data Storage 5000 (depends on SD card capacity) Number of Channels 6 Sample Time 0 to 60 sec Count Modes Concentration Cumulative Differential Count Interface USB Powered By US AC Adapter or Li-Ion Rechargeable Battery