In some examples, a wall-mounted control device includes a display, a circuit board, and a plurality of light emitting diodes (LEDs) coupled to the circuit board and configured to illuminate a plurality of icons on the display. The wall-mounted control device also includes a light guide positioned between the circuit board and the display, where the light guide is configured to block at least ninety percent of the light generated by a first LED of the plurality of LEDs from traveling to a second LED of the plurality of LEDs.