ADDED ELECTRICAL POWER These Adapters Extends Power from Existing Light Bulb Sockets for Areas without Outlets. Use them for Ceiling and Pendant Lighting in Basement, Attic, Garage, Porch Light, String Light or Anywhere Needed. CONTROL WITH PULL CHAIN SWITCH Two Prong Polarized A/C Outlet Plugs with No Ground. The A/C Outlets are always On. The Pull Chain Switch Controls the Light Bulb Only.