THIS AIR PARTICLE COUNTER OFFERS QUICK AND ACCURATE MEASUREMENTS OF PARTICLE SIZES DOWN TO 0.3µM. THE R9930 ALSO MEASURES AIR TEMPERATURE RELATIVE HUMIDITY DEW POINT AND WET BULB. USING THE INCLUDED 8GB MICRO SD MEMORY CARD A USER CAN CAPTURE VIDEOS IMAGES AND PARTICLE LOGS WHICH CAN BE FURTHER ANALYZED WITH THE INCLUDED SOFTWARE. FEATURES UL STYLE""MARGIN-TOP0PX; PADDING-TOP 5PX; PADDING-BOTTOM 5PX;"" DISPLAYS UP TO 6 PARTICLE SIZES DOWN TO 0.3µM AMBIENT AIR TEMPERATURE HUMIDITY DEW POINT AND WET BULB TEMPERATURE MEASUREMENT 2.8"" TFT COLOR LCD DISPLAY TAKE PHOTOS AND RECORD VIDEO WITH BUILT-IN CAMERA SELECTABLE SAMPLING TIME COUNT DATA AND PROGRAMMABLE DELAY EXPORT DATA TO PC WITH INCLUDED USB CABLE LOW BATTERY INDICATOR AND AUTO SHUT-OFF BATTERY LIFE APPROX. 4 HOURS OF CONTINUOUS USE BATTERY CHARGE TIME APPROX. 2 HOURS WITH AC ADAPTER/CHARGER SOFTWARE OS COMPATIBILITY WINDOWS 7/8/10/11 SUPPORTED LANGUAGES ENGLISH FRENCH SPANISH AND GERMAN OPERATING TEMPERATURE 32 TO 122°F (0 TO 50°C) STORAGE TEMPERATURE 14 TO 140°F (-10 TO 60°C) OPERATING HUMIDITY RANGE 10 TO 90% RH NON-CONDENSING MAX OPERATING ALTITUDE 6561' (2000M) INCLUDES UL STYLE""MARGIN-TOP0PX; PADDING-TOP 5PX; PADDING-BOTTOM 5PX;"" AIR PARTICLE COUNTER AC ADAPTER USB CABLE ZERO COUNT FILTER 7.4V LITHIUM-ION BATTERY 8GB MICRO SD MEMORY CARD AND ADAPTER PROTECTIVE CAP FACTORY CALIBRATION CERTIFICATE HARD CARRYING CASE APPLICATIONS UL STYLE""MARGIN-TOP0PX; PADDING-TOP 5PX; PADDING-BOTTOM 5PX;"" DATA CENTERS IAQ TESTING PARTICLE COUNTING CLEANROOMS OPERATING ROOMS PHARMACEUTICALS