LTRN MTN DCRTV 100W BLKr, 6 hour, and dusk to dawn, and full bright when motion is detected, for selected time of 1, 5, or 10 minutes. Automatically returns to dim mode after selected time. Automatic photocell deactivates unit in daylight. Pulse count technologyreduces false sensing from wind and rain. Manual override turns light off or on with existing indoor wall switch to stay on all night when needed. Up to 30' range from hidden 180 degree motion sensor. Uses one 100 watt medium base bulb. 18.5" height x 7" width x 8.5" depth.