For additional information, sales or service, please contact:DERKSEN (USA), INC.4934 Pathway CtFair Oaks, CA 95628Tel (916) 903-7525 • Fax (916) 903-7022www.Derksen.com Info@Derksen.comDERKSEN® (USA)Graphic Projection System______________________________________________________________________________Model GL150-MARATHONREAD ME FIRSTInstallation and Operating Instructionsand Important Safety ConsiderationsBefore turning on the unit, please read this document thoroughly,and retain it for future reference.Warning!To prevent fire or shock hazard, do not expose the unit to rain or moisture.