In some examples, non-lighting application controller technology includes methods and apparatuses. In other examples, the technology includes a non-lighting application controller system. The system includes one or more light fixtures. Each light fixture of the one or more light fixtures has one or more non-lighting elements, such as a speaker, alarm, motor, and camera. Each light fixture of the one or more light fixtures is electrically coupled via a power line. Each light fixture of the one or more light fixtures includes a conversion module configured to convert instructions between power line communication and non-lighting control communication, a communication module configured to communicate the power line communication over the power line, and a non-lighting element controller configured to control the one or more non-lighting elements in a respective light fixture based on the instructions.