This is an unused main deck smoke control panel used on Boeing 747 aircraft. This one has a serviceable tag from UPS dated 12/6/99 and another from Evergreen dated 9/10/03 and has been in storage since. It is in very good condition without damage to the housing or connector. The lights are undamaged and it is listed as part number A261Y03509-1. Unfortunately it is not tagged and I have no way to test it so it is being listed AS IS. Thank you for looking and please see our many other aviation auctions.