The model 7060A1011 is Dimmer doubler unit without input connector. ETC’s Dimmer Doubling gives you two independently controlled lighting circuits for every dimmer. It’s simple. Run one pair of wires from any ETC sensor or unison dimmer to a conventional outlet. Connect an ETC Dimmer Doubler, and plug in two ETC source four fixtures with 550W 77V HPL lamps.The two lighting circuits function independently, as if they were connected to separate dimmers. Dimmer Doubling saves you money by dramatically reducing the number of dimmers you need for your venue. Typically, you could require 25-50% fewer dimmers, potentially saving thousands of dollars in equipment costs. And fewer dimmers means less wiring, lower installation costs - and more savings. Dimmer Doublers can double the number of dimmer circuits using existing wiring.