12V AC outdoor lighting low-voltage transformer. Built-in photocell. Rotary control knob to turn on at dusk, stay on for 4, 6 or 8 hours, always-on, always-off, or 'auto' to remain on until dawn. Packaged in a weather-resistant plastic housing, standard 120V 15A household plug with 4ft cord. Stocked locally and available to ship immediately. UL Listed.