Abstract: In some examples, a device can control one or more heating, ventilation, and air conditioning (HVAC) components within a building and control a digital user interface. The device includes a dial, the digital user interface, and processing circuitry. The processing circuitry is configured to scroll, in response to detecting a set of user inputs to one or both of the digital user interface and the dial, through a sequence of carousel screens for display on the digital user interface and display, on the digital user interface after a period of time following a most recent user input of the set of user inputs, a default carousel screen of the sequence of carousel screens. Additionally, the processing circuitry is configured to display, on the digital user interface, an idle screen corresponding to the default carousel screen of the sequence of carousel screens.

Abstract: In some examples, a device can control one or more heating, ventilation, and air conditioning (HVAC) components within a building and control a digital user interface. The device includes a dial, the digital user interface, and processing circuitry. The processing circuitry is configured to scroll, in response to detecting a set of user inputs to one or both of the digital user interface and the dial, through a sequence of carousel screens for display on the digital user interface and display, on the digital user interface after a period of time following a most recent user input of the set of user inputs, a default carousel screen of the sequence of carousel screens. Additionally, the processing circuitry is configured to display, on the digital user interface, an idle screen corresponding to the default carousel screen of the sequence of carousel screens.

Abstract: A mechanism, such as a membrane switch, may incorporate universal symbols making it language independent. Status of switch components may be understood without aid of another device. The components may have, for example, white backlights and/or icons for neutral symbols to convey informational conditions that do not necessarily command immediate attention and may have, for example, color backlights and/or icons for non-neutral symbols to convey informational conditions that command immediate attention. A choice of white may be agnostic to color blindness and provide high contrast. Also, there may be a self-test icon with an indication when there is an on-going test of a system with which the mechanism is associated. Symbols on the face of the mechanism may indicate valve openings and closings, pressures, faults, and so forth. The symbols and associated lights and backlights may be visible for at least a specified distance to a person with normal vision.