L-PCM06E is a cost-effective ceiling loudspeaker which has an excellent audio performance and esthetic appealing enclosure. Its low-profile appearance and compact structure makes it blend easily into various indoor applications. The loudspeaker has three primary power tapping to meet the basic requirement for most indoor applications. Its metal enclosure protects the internal components from damage of burning flame. In applications with higher security demand, we offer optional back dome LM2-MMB for choice ,constructing a complete metal housing, to protect the internal components and in the same time prevent the flame from going through the loudspeaker to burn the devices upon the ceiling. With precise ergonomic design, you would find the mounting of back dome to the loudspeaker easier than easier. The enclosure and back dome are both made of metal, and it is complied with CE and RoHS standard.