The FCP‑500 Conventional Flush-mount Detectors are UL Listed, open area photoelectric smoke detectors. Use them with commercial fire protective signaling systems and household fire warning systems...
A surface‑mount back box measuring 13.3 cm (5.25 in.) square by 6.7 cm (2.625 in.) deep. It is red with knockouts for half‑inch conduit and a gasket for indoor or outdoor applications.