... PM5, PM2.5.4. Through the RS-485, TH-2000PM can provide upper computer with convenient, reliable ... of data storage, easy operation, convenient maintenance.10. The sampling and measurement of this monitoring instrument ... are no longerSpecificationsOperating Principle beta ray attenuationRange 0-10,000μg/m3Resolution 1μg/m3Lower Detection ... W × 30cm D × 31cm H TH-2000PM Ambient Particulate Monitor