2-outlet outdoor rated countdown timer ideal to make programming simple. Features a built-in photosensor which activates the countdown, and temporary light sources like porch lights or car headlights will not turn off the connected lights or cause the program to re-set. Includes (2) 3-prong grounded outlets for use with indoor or outdoor devices and 8 On/Off settings. Photocell activated programming resets only after programming cycle has completed. Push-button to select program - choose from 8 modes: on at dusk for 2 Hr., 4 Hr., 6 Hr., 8 Hr., 12 Hr., dusk to dawn, always on, or always off. Countdown timing starts at dusk for the timed duration selected. Patented Reverse Ground-Pin: when mounted to a wall, the unit accepts most right-angle and transformer plugs. Mounting holes for safely securing timer to a wall. Compatible with CFL (compact fluorescent), LED (light emitting diode), and incandescent light bulbs.