The Philips Bodine BDFS Emergency Door Frame Strobe is a highly visible, system-integrated, Egress Marking Visible Notification Appliance (EMVNA). Upon activation of the fire/security system, the BDFS unit responds in sync with all other attached appliances by flashing/strobing a highly visible light by illuminating the light strand luminaries attached to each appliance. The illuminated light strands outline the frame of the doorway (or other areas where installed) indicating the proper path to safe egress and shall strobe during the entire duration of the activated fire/security system.