Sollos TR12PC-INT-100 100W Lighting Transformer with Photocell Timer (997012)The Sollos TR12PC INT 100 100W Lighting Transformer with Photocell Timer (997012) from Sollos Lighting is a top tier option in our Lighting, Low Voltage Transformers range. Built in photocell and timer enable fixtures to function manually, automatically, or via a timer: Automatic: lights activate at dusk, deactivate at dawn TR12PC INT 100: turns off 4, 6, or 8 hours post dusk Primary Protection: Resettable circuit breaker safeguards against overloads