The Aquacom mk2-dci is a compact, self-contained two- or one-diver air Intercom. It will provide one or two divers, using a full-face mask and Ear/microphone assembly, with clear communications either in the 2- or 4- Wire mode. However, up to 6 divers can be stacked and all be on line together (4-wire mode). The 20 watts of power ensures clean, crisp communications over long lengths of communications rope. State-of-the-art circuitry allows intelligibility that is second to none. Our unique battery protection microprocessor will protect your batteries from being damaged due to extreme low voltage conditions.