I am looking for a source of laser barriers to use in an upcoming exhibition. Basically, I'd like to protect specimens displayed behind a minimal physical barrier by adding a laser beam barrier that will set off an audible alarm when the beam is broken. Sonic curtains are not an option in this case. Thanks Wil ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes).