&lt;P&gt;The Perfect Solution For Projectors Without A 12V Trigger Output.&lt;Br /&gt;&lt;Br /&gt;&amp;bull; Universal Wireless Projector Trigger&lt;Br /&gt;&amp;bull; Uses Projector&amp;#039;S Power To Send A Wireless Radio Frequency Signal To Your Elite Screens Electric Projection Screen&lt;Br /&gt;&amp;bull; Compatible With Only Version 2.0 Electric Roll Up/Down Screen&lt;Br /&gt;&amp;bull; No 12V Trigger Output Required From Projector&lt;Br /&gt;&amp;bull; Synchronizes To The Projector&amp;#039;S Power Cycle To Wirelessly Drop And Rise The Screen&lt;Br /&gt;&amp;bull; Control Distance Rangeup To 80 Feet&lt;Br /&gt;&amp;bull; Operates In Either 110 Volts Or 220 Volts&lt;/P&gt;