Cranford Controls VXB-1EVAD-C-DB-WB-RF Ceiling Mounted VAD LED Beacon Deep Base White Body Red Flash - Coverage C-3-7. The VXB EN54 part 23 approved beacon are part of the VTG/VTB family of products. The Visual Alarm Device (VAD) are available in white or red flash and have been approved at 1 Hz flash rate to EN54-23, at C-3-8(White flash) and C-3-7(Red flash) coverage range.