Fire-Lite ANN-SB80KIT-R Surface Mount BackboxANN SB80KIT surface mount annunciator box kits are installed with Fire Light ANN 80 annunciators. The ANN 80 and the FACP communicate over a two wire serial interface employing the ANN BUS communication format. Connected devices are powered, via two additional wires, by either the host FACP or a remote UL listed, filtered power supply. The kits contain one surface mount plastic backbox with two 1 2 inch NPT holes, one surface wedge plastic accessory