Control device having buttons with automatically adjustable backlighting

An electrical load control device illumination method, comprising:

• receiving, by illumination control circuitry, data indicative of an actuation of a first button;
• and
• responsive to receipt of the data indicative of the actuation of the first button:
• retrieving, from memory by the illumination control circuitry, an active button illumination level using a first relationship based on a measured ambient light level;
• wherein the first relationship includes the active button illumination level as a function of an ambient light level;
• retrieving, from memory by the illumination control circuitry, an inactive button illumination level using a second relationship based on the measured ambient light level;
• wherein the second relationship includes the inactive button illumination level as a function of the ambient light level;
• causing, by the illumination control circuitry, a first light source to illuminate only the first button at the retrieved active button illumination level;
• and
• causing, by the illumination control circuitry, a second light source to illuminate a second button at the retrieved inactive button illumination level.

A non-transitory, machine-readable, storage device that includes instructions that when executed by electrical load control device illumination control circuitry, causes the illumination control circuitry to:

• receive data indicative of an actuation of a first button;
• and
• responsive to receipt of the data indicative of the actuation of the first button:
• retrieve, from memory, an active button illumination level using a first relationship based on a measured ambient light level;
• wherein the first relationship includes the active button illumination level as a function of an ambient light level;
• retrieve, from memory, an inactive button illumination level using a second relationship based on the measured ambient light level;
• wherein the second relationship includes the inactive button illumination level as a function of the ambient light level;
• cause a first light source to illuminate only the first button at the retrieved active button illumination level;
• and
• cause a second light source to illuminate a second button at the retrieved inactive button illumination level.