Malibu 3100-1300-01 300 Watt Low Voltage Transformer, Photo Eye Sensor and Timer Built-in photo eye sensor for auto turn on and off Fully programmable timer with Auto (dusk to dawn, 4 Hr, 6 Hr, 8 Hr, and 10 Hr schedules) Durable heavy duty polymer housing with black matte finish 300 Watt low voltage power pack, 12V AC Low Voltage Circuit Breaker Protection