Method and Apparatus for Adjusting an Ambient Light Threshold

A method to control a light fixture, the method comprising:

• receiving, by electric load control circuitry, a first signal that includes information indicative of an occupancy in a space from an operatively coupled occupancy sensor;
• receiving, by the electric load control circuitry, a second signal that includes information indicative of a measured ambient light level in the space from an operatively coupled light sensor;
• and
• responsive to receipt of the first signal by the electric load control circuitry:
• determining, by the electric load control circuitry, an ON/OFF operating state of a light fixture in the space using the measured ambient light level in the space and an ambient light threshold value stored in operatively coupled memory circuitry;
• initializing, by the electric load control circuitry, a timer;
• monitoring, by the electric load control circuitry, an operatively coupled actuatable element for a manual input to change the ON/OFF operating state of the lighting fixture during the pendency of the timer;
• and
• responsive to receipt by the electric load control circuitry of the manual input to change the ON/OFF operating state of the lighting fixture:
• determining, by the electric load control circuitry, a new ambient light threshold value;
• and
• replacing, by the electric load control circuitry, the ambient light threshold value stored in the memory circuitry with the determined new ambient light threshold value.

A non-transitory, machine-readable, storage device that includes instructions that, when executed by electric load control circuitry operatively couplable to a light fixture, cause the electric load control circuitry to:

• receive a first signal that includes information indicative of an occupancy in a space from an operatively coupled occupancy sensor;
• receive a second signal that includes information indicative of a measured ambient light level in the space from an operatively coupled light sensor;
• and
• responsive to receipt of the first signal by the electric load control circuitry:
• determine an ON/OFF operating state of a light fixture in the space using the measured ambient light level in the space and an ambient light threshold value stored in operatively coupled memory circuitry;
• initialize a timer;
• monitor an operatively coupled actuatable element for a manual input to change the ON/OFF operating state of the lighting fixture during the pendency of the timer;
• and
• responsive to receipt by the electric load control circuitry of the manual input to change the ON/OFF operating state of the lighting fixture:
• determine a new ambient light threshold value;
• and
• replace the ambient light threshold value stored in the memory circuitry with the determined new ambient light threshold value.