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To measure relative humidity connect the probe to the socket. Set the function switch to the “HUMIDITY” position. The unit is ready for The DTH1 is a process control instrument for measurement of humidity humidity measurements in the range of 20 t 90% RH.
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Temperature & Humidity Tester Limited Warranty The DTH1 is warranted to be free from defects in materials and workmanship for a period of one year from the date of purchase. If within the warra n ty period your instrument should become inoperative from such defects, the unit will be repaired or replaced at UEi’s option.