I'm selling two Kodak SP Programmable Dissolve Controls. These are used to do all sorts of cool effects with Kodak slide projectors (transitions, etc). They are both in absolutely perfect condition and work as new. They will come with boxes and adapters, and I have at least one owner's manual (I'll look for the other, but they're available online). The price is for EACH dissolve control (online I've been seeing them listed for $250-400. The original retail price on it is still on it...$899.99 plus taxes!). Feel free to message me if you have any questions. From Kodak: This Kodak SP Dissolve Control is a two-projector dissolve unit that gives you smooth transitions between slides and the option of seven dissolve rates, including reverse dissolve. You get independent lamp control that lets you superimpose your images. You can set the automatic timer or have automatic flashing or frozen images. For additional creativity, this controller gives you the option of synchronizing your presentation with an audiotape. This controller works with Kodak Ektagraphic projectors and Kodak carousel projectors. It can: Alternate flashing or freezing images Fade, set timing, or fade and self-running options 7 dissolve rates Synchronize slides to audiotape Automatic timer, automatic tray reset And more