Pressing the button while navigating the Indigo80 menus and views opens the main menu. Figure 1. Indigo80 main menu 1 Devices menu contains, for example, options related to sensor purge, calibration, and environment settings (depending on the connected device). 2 Data logging menu for setting logging interval and duration, and browsing data files. 3 Notifications menu displays notifications related to Indigo80 and the connected devices. 4 Indigo80 menu for changing the settings of Indigo80 (for example, date, time, and language) and viewing device information. 5 Help menu contains a Getting started tour showing the key features of Indigo80, as well as instructions for sending devices to Vaisala for calibration and maintenance.