Brand: HTC-1 Product Description Display temperature, humidity and time simultaneously Large LCD display allows for easy reading Low power consumption Integral-hour alarm function Alarm function High stability & accuracy 12-hour / 24-hour displaying system selectable °C /°F unit selectable Clock & Calendar function (month and date ) Desk-top placing or Wall Hanging Memory of MAX & MIN measuring value Temperature range: -50 ~ + 70 °C ( -58 ~ +158 °F ) Humidity range: 10%~99%RH Resolution: Temperature: 0.1 °C ( 0.1°F); Humidity: 1%RH Accuracy: Temperature :± 1 °C ( 1.8 °F ); Humidity :± 5% RH ( 40% ~ 80% ) Power supply: 1.5V 1 x ( AAA size ) battery Storage condition: -20 °C ~ 60 °C , 20~80%RH