The screen of digital thermostat heater displays the temperature you set and the current temperature at the same time (temperature set range: 300℉-999℉), easy to read. When the temperature you set is reached, the screen of digital temperature controller will display your usage time, and accumulate time, so you can clear to know the total time you use. It has last set temperature memory so once you find your ideal temperature you won't need to change the temperature every time you use the temperature controller. (The default setting temperature is 710℉)