Variable intensity street lamp led retrofit kit

A retrofit kit for a street lamp having a lamp socket, a light sensor, and a ballast box, said kit comprising:

• a light unit that includes a plurality of LED elements and a screw base that functions to removably engage the lamp socket;
• a motion sensor that is configured to detect movement;
• and
• a control unit having a shape and size that is complementary to a shape and size of the ballast box, said control unit including
• one or more input output units that function to communicate with each of the motion sensor and the light sensor,
• an AC to DC power source having a connector for communicating with the light unit and for supplying a DC power output thereto,
• a dimmer unit,
• a timer module,
• a memory, and
• a processor that is in communication with, and controls an operation of each of the power source, the dimmer unit, the memory and the timer module.