Product descriptionthe compact testo 605i climate conditions and air moisture measuring instrument with bendable probe head features professional measuring technology in an intelligent format It serves well in conjunction with a smartphone/tablet and the testo smart probes app to reliably measure air temperature and humidity in rooms and ducts. Instrument specificationsrange of measurement starting from zero tp 100 %rh, 20 to, 60 c accuracy 1. 8 %rh 3 % of m. V. At, 25 c 5 to 80 %rh 0. 5 c 0 to, 60 c resolution 0. 1 cgeneral specificationsunits c compatability requires ios 8. 3 or newer /android 4. 3 or newer requires mobile end device with bluetooth 4. 0 storage temperature, 20 to, 60 c operating temperature, 20 priced at, 50 c battery type 3 micro batteries aaa battery life 250 hrswarranty 2 yearsfeatures1. Compact professional measuring instrument from the testo smart for use, Probes series with smartphones/tablets 2. Measurement of air atmospheric moisture and warmth in rooms and ducts 3. Automatic calculation of dewpoint and wet bulb temperature via testo smart probes app 4. Measurement data analyzed and sent via testo smart probes app 5. Sychometric calculations on the phone