This is an emergency lighting system. Included are:
~ A Philips Bodine B50 Fluorescent Emergency Ballast (Lamp Selection Connector). It's 120/277VAC and 4.0watts. It measures 12" long and 2.5" wide. This comes with a test button already connected.
~ A Triad Electronic Ballast that connects with the Philips so that when the power goes out they kick on in an emergency situation. This one measures 8.5" long and 1.5" wide.
These would be great to have in your home, office or Rv for safety purposes in an emergency. They come in great pre-owned condition.