The Furuno LH-3000 is a high-performance 30-watt loud hailer with an intercom function. The LH-3000 is designed for a wide variety of ships requiring high quality onboard and ship-to-ship communications under almost all circumstances. Solidly built and waterproof, the LH-3000 contains a high quality built-in speaker and a microphone. On its front panel, there are easy-to-see state indicators. By generating voice or eight internationally acknowledged warning signals from the horns, the LH-3000 notifies nearby vessels of your presence and status regardless of visibility conditions. The LH-3000 can also function as an intercom when connected to optional intercom speakers. Up to four intercoms can be connected for two-way communication between the bridge and one or all intercom stations. The LH-3000 can be connected to various pieces of equipment to enable useful functions. When connected to an external alarm unit, the LH-3000 can function as a security alarm. An auxiliary audio input allows transmission of music or other external audio signals (from CD player, radio, etc.) to the intercom speakers and external horns. Measures 8.7"W x 4.3"H x 5.9"D. Two-year warranty.