- Marine paging horn - Talkback (requires V-9941A to operate) - Easy Omni-Lock I-Beam clamp mounting system - Weather resistant -Interior/exterior - Built-in amplifier - Built-in volume control - Non-yellowing perfect forshipboard and marinas - Stainless steel hardware - Resists deterioration by salt sun or high humidity - Equipped with O-ring seals - 360* rotation - Shatter-proof base fits seven standardelectrical gang boxes - White - Weight: 4.5lbs - Dimensions: 7.38inchH x 10inchW x 10.4inchD - VALCOM POWER UNITS (0)