The Fire-Lite SD365 Series addressable plug-in smoke detectors are designed for both performance and aesthetics. A new modern, sleek, contemporary design and enhanced optical sensing chamber are engineered to sense smoke produced by a wide range of combustion sources in accordance with more stringent code standards. Models include the SD365(A) photo detector, SD365T(A) photo thermal detector and SD365R(A) remote test capable detector for use with DNR(A)/DNRW. Available in both white (LiteSpeed protocol only) and ivory (CLIP and LiteSpeed protocols).