The HTC-1 temperature humidity meter can display current temperature, relative humidity, and current time on a large numeral LCD display screen at the same time. The item also offers the current Date and Day at the push of button, along with Max and Min temperature readings, perfect for home or office. Shell material: durable hard plastic. Good quality temperature & humidity meter. Can show temperature, humidity & time at same time on the large LCD display, for easy to read. Memory of MAX & MIN measuring value. 12-hour and 24-hour displaying system selectable. Fahrenheit or Celsius readout (changeable by selecting F or C on back). Integral-hour alarm function. humidity meter Alarm function. Clock and Calendar function (month and date). hygrometer temperature humidity meter Desktop placing or wall hanging. Power: 1 * 1.5V AAA Battery (included).