Loud Hailers

VLH-3000A 30W Dual Zone PA/Loud Hailer/Fog w/Listen Back & 2 Optional Intercom StationsFeatures: 30W PA/Hailer output with Listen Back Dual Zone - Forward, Aft or Both 6 Preprogrammed Fog Signals: Underway, Stop, Sail, Tow, Anchor and Aground Horn...