onsetcomp com 18onsetcomp com Part number U23 001 Internal Temp RH U23 002 External Temp RH U23 003 2x External Temp U23 004 Temp External Temp Memory 42 000 measurements Sampling rate 1 second to 18 hours fixed rate or multiple logging intervals Battery life 3 years typical user replaceable 1 2 AA lithium Internal Temperature Measurement range 40 to 70 C 40 to 158 F Accuracy 0 21 C over 0 to 50 C 0 38 F over 32 to 122 F Resolution 12 bit 0 02 25 C 0 04 77 F Stability drift 0 1 C 0 18 F per year Relative Humidity U23 001 U23 002 only Measurement range 0 to 100 RH 40 to 70 C 40 to 158 F Accuracy 2 5 from 10 RH to 90 RH typical to a maximum of 3 5 including hysteresis at 25 C 77 F below 10 RH and above 90 RH 5 typical Resolution 12 bit 0 05 RH External Temperature Measurement Range U23 002 40 to 70 C 40 to 158 F U23 003 U23 004 40 to 100 C 40 to 212 F with sensor tip and cable immersion in fresh water up to 50 C 122 F for one year Accuracy 0 21 C from 0 to 50 C 0 36 F from 32 to 122 F Resolution 0 02 25 C 0 04 77 F Dimensions Housing measures 10 2 3 8 cm 4 0 1 5 in CE compliant Yes For complete information and accessories please visit www onsetcomp com Key Advantages Weatherproof housing for use in outdoor or condensing environments High accuracy measurements Replaceable RH sensor provides superior recovery from condensing conditions Small diameter external sensor versions for measurements in tight spaces Optic USB interface for fast and reliable download HOBO Pro v2 data loggers are weatherproof loggers that provide high accuracy temperature and relative humidity measurements in a wide range of outdoor environments Supported Measurements Temperature Relative Humidity Dew Point HOBO Base Station or HOBO Waterproof Shuttle required See page 56 for more details 1Coupler included with HOBO Base Station or HOBO Waterproof Shuttle Please visit onsetcomp com or call us at 1 800 564 4377 Weatherproof loggers for outdoor temperature and humidity measurements HOBO Pro v2 Temp RH Loggers Minimum System Requirements Coupler1Base Station See pg 56 Software See pg 45

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