TEMPERATURE HUMIDITY METER - RANGE: -20 DEGREES TO 60 DEGREES C. (-4 TO 140 DEGREES F. ) RELATIVE HUMIDITY RANGE: 5% TO 95% - THE FLUKE 971 IS INVALUABLE FOR FACILITY MAINTENANCE AND UTILITY TECHNICIANS, HVAC SERVICE CONTRACTORS, AND SPECIALISTS WHO ASSESS INDOOR AIR QUALITY - BACKLIT DUAL DISPLAY OF HUMIDITY AND TEMPERATURE - 99 RECORD STORAGE CAPACITY - ERGONOMIC DESIGN WITH BELT CLIP AND PROTECTIVE HOLSTER - QUICK -RESPONSE CAPACITANCE SENSOR WITH PROTECTIVE COVER - MEASURES DEW POINT AND WET BULB - MIN/MAX/AVG DATA HOLD - LOW BATTERY INDICATOR - WEIGHT: 6.7 OZ. - FLUKE 971