I bought a bunch of screen printing equipment from a shop that closed down. One of the items is a xpresscreen XEF913 exposure unit. I do not have any screen for this unit so I can't try it out. It does turn on and flash like it is supposed to. I have no use for it so I am selling it For $2500 firm. I do have some screen frame that come with it. This system retails for around $4500 new. I can send pictures and video of it working if you like. You can contact me at [email protected] or call me at 321-652-5120.