The Smart Thermostat uses touch screen technology that makes navigation easy. Lightly tap the icons, buttons and lists or drag your finger across the screen to move a slider or scroll through a list. Note: To prevent damage to the touch screen, never use a sharp object such as a pen. When the screen shows a list of items, an arrow to the right of the item indicates more than two options to choose from. Touching this arrow will bring you to a new list or screen. If there are only two options for a given list, they will be displayed next to a switch within the list. Pressing anywhere on the item will toggle from one option to the other. In the various screens on the thermostat, you have three ways to navigate: Press Cancel to go back to the previous screen without saving changes. Press Done to save changes and move to the next screen. At any time, press the home button (found at the righthand side of the touch screen). This cancels any action and takes you back to the home screen.