The Powerbox FlipBox allows any ballast to run 2 lights (non-simultaneously). The FlipBox works with both magnetic and digital ballasts, allowing you to expand without the need for bringing in additional power circuits. Simply plug the FlipBox into your ballast and you can plug 2 lamps into the FlipBox. A trigger cord controls the "flip". Each unit has a 120V slave outlet, so you can daisy-chain multiple FlipBox trigger cords to each other and use as many FlipBoxes as you have ballasts, all triggered by one timer. Compatible with 120V and 240V ballasts. Includes 6' patch cord (FlipBox to Ballast) and 6' 120V trigger cord.