Simply switch this landscape transformer to Auto mode and your lights will turn on at dusk and turn off at dawn. Or combine Auto mode with the countdown timer so your lights turn on at dusk and stay on as long or as short as you like. Built from heavy duty materials with a strong durable design, this low voltage transformer for landscape lights is made to withstand years of rain, snow, sunlight and hail. Auto and countdown modes help you save energy, keeping your electric bill low. ETL Listed. Landscape lighting transformer, Input: 120V AC / 60HZ, Output:12V AC, Max Power Rating: 120 Watt.