The BLU-SM is a microphone designed to work with the BSS London Series of Digital Signal Processors for LDS chapel installations. It mounts to the front of the sacrament table. A template is provided to assist in the installation process. Also included are the approved sacrament prayer card (LDS Distribution Center P/N 35786) and the mounting hardware. The microphone is activated by lowering the front panel. When it is lowered an LED will light to indicate that it is on.