| CPC H05B 47/17 (2020.01) [H05B 47/185 (2020.01); H05B 47/19 (2020.01)] | 15 Claims |

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1. A luminaire configured to be included in a lighting control group, the luminaire comprising:
a luminaire network communication interface system configured for communication via a lighting control network over a lighting control network communication channel for lighting control and systems operations;
a luminaire light source to emit illumination lighting;
a luminaire driver circuit coupled to the luminaire light source to control light source operation of the luminaire light source;
a luminaire power supply driven by a power line;
a luminaire processor coupled to the luminaire network communication interface system and the luminaire driver circuit;
a luminaire memory accessible to the luminaire processor and including a battery level threshold; and
luminaire programming in the luminaire memory, wherein execution of the luminaire programming by the luminaire processor configures the luminaire to implement functions, including functions to:
receive a lighting control message;
track: (i) a time measurement, (ii) a count of total switch activations, (iii) a count of a number of lighting control messages received, or (iv) combination thereof since a battery power source of a power switch has been restored;
determine a battery level of the power switch using: (i) the time measurement, (ii) the count of total switch activations, (iii) the count of the number of lighting control messages received, or (iv) combination thereof; and
in response to the battery level of the power switch being less than the battery level threshold, control the luminaire to enter a low battery mode.
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