The XP95 Open-Area VAD Cat. C is designed for indoor use. The Category C VAD is specifically designed for use on a ceiling and comes in two different coverage classes. These devices are used to supplement sounders in areas which carry the risk that sounders will not be heard. Uses high intensity LED EN 54-23 Compliant Category C VAD Coverage C-3-8.5 and C-3-15 Flash rate 0.5Hz Fault signal if LED check failed Locking mechanism (grub screw) Wide angle of visibility Synchronised flash rates with the Apollo Protocol