Sea-Dog Sonic Mini Compact Horn - White [431152-1] Marine Navigation & Instruments | AIS Systems Humminbird provides built-in mapping

Humminbird provides built-in mapping

Folds down easily for transportation

GND™ 10 Black Box Bridge

giving you a better sense of target depth

Sea-Dog Sonic Mini Compact Horn - White [431152-1] Marine Navigation & Instruments | AIS Systems Humminbird provides built-in mappingSonic Mini Compact Horn White These Sonic Mini Compact Horns feature ASA plastic covers for impact and UV resistance. Mounting bracket can be used as a wiring template. Horn wiring has no polarity, so the negative or positive wire can be attached to either side. When installed, horns should point slightly downward to permit water drainage. At 108 decibels and a frequency (Hz) of 44020A, this horn meets US Coast Guard's COLREGS and ABYC standard A 23