100% brand new and highly quality! Multi-function ，Low power consumption. High stability ; accuracy Memory of last measuring value Features: In and out temperature measuring Display temperature and humidity simultaneously MIN and MAX value recording Comfortable degree symbol °C/°F unit selectable Desk-top placing or wall hanging Temperature range: In side temperature: -10 ~ +50°C (+14 ~ +122°F) Out side temperature: - 50 ~ +70°C (- 58 ~ +158°F) Humidity range: 20% ~ 90%RH temperature accuracy: ±0.1°C (-20 ~ 60°C)， ±2°C (other) Storage condition: -20 ~ 60°C， 20 ~ 80%RH Package Included: 1x Thermometer hygrometer 1x C/F switch cable