This is a multi-function instrument that can display temperature, time and humidity all at the same time. It also has alarm and calendar functions. Place this device on a desk or hang it on a wall. --Displays the temperature, time and humidity all at the same time. --Clock and calendar function (month and date). 12-hour or 24-hour display --Large Character LCD display --Temperature range: -10~ + 50 ºC (14~122 ºF) --Humidity range: 10%~99%RH