ADDED ELECTRICAL POWER: These Adapters Extend 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. NO PULL CHAIN SWITCH: Two Prong Polarized A/C Outlet Plugs with No Ground. The A/C Outlets are always On. An External Switch is Needed to Control the Light Bulb. Compatible to LED, CFL and Incandescent Light Bulbs. ADAPTER SPECIFICATIONS: The Adapter Handles Maximum Voltage of 125V (Typical 110V to 120V A/C OK), Total Outlet Maximum Power of 660W. Total Light Bulb Maximum Power of 250W, and Maximum Current of 5 Amp. SAFETY COMPLIANCE AND CAUTION: CE and RoHS (Lead Free) Compliant. Please Make Sure Your Existing Light Fixture can Handle the Maximum Power Used. STANDARD BASE AND COMPACT SIZE: Adapter Length: 3.25, Widest Diameter: 1.5, Base: E26 Standard Medium Edison Screw Base (26mm Diameter). Finish: Black. Pack of 2. 1 YEAR WARRANTY: Seller 1 Year Warranty