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Air humidity and temperature with dew point calculation & wet bulb including calibration protocol,protective cap, wrist strap, belt holder,batteries,measuring range temp : -10 . 50°c,resolution : 0.1°c,accuracy : +- 0.5 °c,measuring range humidity : 0 . 100% rh,resolution: 0.1%rh,accuracy: +- 2.5 %rh (5 . 95 %rh)