One channel flush mount headset/speaker station The KB-111A is a high-quality remote speaker station that allows talking and/or listening on one of any two channels in a Clear-Com system(not both simultaneonsly). Compatible with all Clear-Com intercoms, this station features excellent speech intelligibility in high- and low-noise environments. The wide frequency response speaker delivers crisp sound quality at levels high enough to be heard in the noisiest surroundings.