RECORD AND INSTANTLY DISPLAY TRENDS FOR TEMPERATURE HUMIDITY AND DEW POINT WITH THE DVTH. MONITOR REAL TIME MEASUREMENTS FOR INSTANT ENVIRONMENTAL CONDITIONS. WHEN YOU'RE READY DOWNLOAD OVER 40000 DATA POINTS TO YOUR PC FOR FURTHER ANALYSIS. DATA LOGGING HAS NEVER BEEN THIS VISUAL. TEXT DISPLAY REAL TIME TEMPERATURE HUMIDITY AND DEW POINT. LOGGING SUMMARY SAMPLE RATE MEMORY USED AND MEMORY LEFT. GRAPH DISPLAYSHOWS MEASUREMENT TRENDS GRAPHICALLY WITH SCROLLING FEATURE. VISUAL OVER AND UNDER ALARM INDICATORS FOR TEMPERATURE AND HUMIDITY. USB CONNECTION (CABLE INCLUDED). COMPATIBLE WITH WINDOWSTM 98SE ME 2000 XP AND ABOVE. CALIBRATION THROUGH SOFTWARE.