Intermatic Mechanical Timer

Automatically control transformer.

The mechanical timer plugs into the timer receptacle located inside the transformers weatherproof cabinet. 

The timer plugs into the cabinet and the timer cord (inside the transformer cabinet) plugs into the side of the timer. 

  Easy to install and set. 

Great especially if combined with a photocell -- use the timer to have the transformer shut off at a preset time (like midnight forexample) and the photocell will make sure it only comes on at night.  If you only use a timer (no photocell) the start time will not always match-up