TEMPerHUM PC Sensor PC USB Hygrometer and Thermometer Temperature Range: -40 ~ +85Resolution rate of temperature: 0.06Precision of temperature: + 2Range of humidity: 0~100RH%Resolution rate of humidity: 0.03RH%Precision of humidity: +5 RH% (20RH%~90 RH%)Signal indication: red light when workingRecharging method: PC or AC transfer USB port adapterWeight: 21gColor: SilverMaterial: MetalSize: 4.9 x 1.6 x 1cm/1.9 x 0.6 x 0.4in(L x W x T)Package included:1 x PC USB Hygrometer and Thermometer 1 x USB Cable1 x CD