A temporary task lighting system used on job sites has an alarm mode. The system may be used to provide an alarm indication using the light units of the system. The alarm indication may be cycling the lights through on and off conditions or full on and dimmed conditions. Different systems and methods may be used to activate the alarm. The alarm activation may come from a typical fire alarm switch, a button on the power supply, a button on a central control computer, or a signal from an emergency response system such as a 911 system. The disclosure also provides central control for remote drivers and ballasts. The central control allows different zones of low voltage lighting systems or different zones of low voltage lights to set up, identified, and individually controlled from a central interface.