INSTANTLY CALCULATE DP( DEW POINT) AND (WB) WEB BULB TEMPERATURE. EASY TO READ T1 , T 2 , T1 - T2 . ACCURATE TO GET STABLE READING FOR THE DIFFERENCE FOR SURFACE ( T2 )AND DEW POINT TO THE ENVIORNMENTS OF PROTECTIVE COATING / PAINTING FIELD. UNIQUE DESIGN ON SENSOR PROTECTION . ROTRONIC HUMIDITY SENSOR-CAPACITANCE TYPE . OPTIONAL EXTERNAL PENETRATE PROBE FOR CHECKING FOOD QUALITY.