Landscape lighting that is connected to this transformer will automatically switch on at dusk and off at dawn. By converting household voltage from 120-Volt AC to 12-Volt/13-Volt/14-Volt/15-Volt AC safety voltage using 300W, a safer and more useful electrical current level is produced. Light control timing has 1-hours to 9-hour countdown. With this option, the transformer will turn on at dusk and shut off automatically 1-hours/2-hours/3-hours/4-hours/5-hours/6-hours/7-hours/8-hours/9-hours later. Convenient and energy efficient ideal for landscape lights such as deck light, string, garden or yard decor, water feature etc. To select Always On, Auto, or Countdown Timing mode, press up/down arrow. It has Built-in mounting holes, 3.3 ft. STJW 18AWG power cord, and direct wall mounting for outdoor walls. Manual reset circuit breaker will trip automatically in case of overload to ensure safety. Material: Metal.