{"product_id":"hella-marine-s92-24v-dual-tone-disc-horn-kit-113-db","title":"Hella Marine S92 24V Dual-Tone Disc Horn Kit 113 dB","description":"\u003cp class=\"nvn-hero\"\u003eThe Hella Marine S92 dual-tone disc horn kit packs two horns in one box, a 435 Hz high-tone and a 335 Hz low-tone that blend into a full 113 decibel note that carries across the water. It's a 24-volt kit built for larger cruisers and commercial boats, and it ships with mounting brackets for both horns.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThe Hella Marine S92 dual-tone disc horn kit gives you two horns in one box, a high-tone unit at 435 Hertz and a low-tone unit at 335 Hertz. Run them together off the same switch and the two frequencies stack into a deep, full note that carries across open water at 113 decibels. This is a 24-volt kit. So it's built for bigger boats, trawlers, and commercial rigs running a 24V system, not the average 12-volt center console. Check your battery bank voltage before you order.\u003c\/p\u003e\n\u003cp\u003eWhy two tones instead of one? A single horn tends to sound thin and easy to miss against wind and engine noise. Stacking a high and a low frequency gives you a richer sound that other boaters actually notice, which is the whole point of a signaling horn. You get that classic layered blast, the kind you hear off a working harbor, rather than a flat electric beep.\u003c\/p\u003e\n\u003cp\u003eEach horn is a compact 3.58 inch round disc, so they tuck into tight spots on a hardtop, under a gunwale, or up on a flybridge without hogging real estate. The kit ships with mounting brackets for both horns, so you've got what you need to hang them out of the box. The bodies are galvanized metal and finished in black, which keeps them low-profile against dark hardware and gives them a fighting chance against corrosion.\u003c\/p\u003e\n\u003cp\u003eA quick word on power. The pair pulls about 3 amps at 24 volts, since the kit is rated at 72 watts total. On a short run straight to a panel switch you can wire them directly, but on a 40-foot boat with a long cable run back to the helm, do yourself a favor and put a relay in the circuit. Feed the horns with heavy enough wire and a dedicated fuse, around 10 amps, so you don't get voltage drop that leaves them sounding weak. A relay also keeps the high current off your dash switch, which makes the switch last a lot longer.\u003c\/p\u003e\n\u003cp\u003eOut in salt air, the enemy is corrosion at the mounting points. We'd hit the bracket bolts and the back of each horn with a little dielectric grease before you button it up. If you're mounting to a hardtop or a rail that vibrates, a couple of rubber isolators under the brackets will stop the discs from buzzing at speed. Do that once at install and these mostly disappear into fit-and-forget territory, which is exactly what Hella Marine builds them for.\u003c\/p\u003e\n\u003cp\u003eInstallation is straightforward for anyone comfortable running 24-volt wiring. Pick a spot where the horn faces outward and away from your own ears at the helm, usually forward under a hardtop lip or on the front rail. Keep the disc opening angled slightly down so it sheds water instead of collecting it. Once both horns are mounted and wired to your switch through the relay, give them a test blast at the dock and listen for a clean, blended tone. If one horn sounds off, it's almost always a loose ground, so chase your connections before you assume a bad unit.\u003c\/p\u003e\n\u003cp\u003eWho's this for? Owners of larger cruisers, trawlers, and commercial vessels that already run 24 volts and want a real, attention-getting sound signal at the helm. It works as a primary horn on a boat that doesn't have one, or as a louder upgrade over a tired single-tone unit. If your boat is 12 volts, this specific kit isn't your match, and we'd rather tell you that up front than sell you the wrong horn. And remember, a horn like this covers close-quarters signaling, but it doesn't replace the sound-signal gear your vessel size may require under the navigation rules, so check what your boat needs.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003eDual-tone kit: one 435 Hz high-tone and one 335 Hz low-tone disc horn that blend into a full, carrying note\u003c\/li\u003e\n  \u003cli\u003e113 decibel output cuts through wind and engine noise so other boaters hear you\u003c\/li\u003e\n  \u003cli\u003e24 volt design built for larger cruisers, trawlers, and commercial vessels on 24V systems\u003c\/li\u003e\n  \u003cli\u003e72 watts total, roughly 3 amps of draw at 24 volts, easy to fuse and switch\u003c\/li\u003e\n  \u003cli\u003e3.58 inch round disc bodies fit tight mounts on hardtops, rails, and flybridges\u003c\/li\u003e\n  \u003cli\u003eGalvanized metal construction with a black finish for corrosion resistance in salt air\u003c\/li\u003e\n  \u003cli\u003eMounting brackets included for both horns, ready to hang out of the box\u003c\/li\u003e\n  \u003cli\u003eLow-profile black housing blends in with dark hardware and rails\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Hella Marine reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this a 12-volt or 24-volt horn kit?\u003c\/summary\u003e\n    \u003cp\u003eIt's 24 volt. It's built for boats and commercial rigs running a 24V system. If your boat is 12 volts, this specific kit won't be the right fit, so check your battery bank voltage first.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat comes in the kit?\u003c\/summary\u003e\n    \u003cp\u003eTwo disc horns, one 435 Hz high-tone and one 335 Hz low-tone, plus mounting brackets for both. Wiring, a switch, and a relay aren't included.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow loud is it?\u003c\/summary\u003e\n    \u003cp\u003e113 decibels. Running both tones together gives you a fuller, more noticeable sound than a single horn.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhy are there two different tones?\u003c\/summary\u003e\n    \u003cp\u003eOne horn is tuned to 435 Hz and the other to 335 Hz. Sounded together, the two frequencies blend into a deeper, richer note that carries better and is harder to miss than a single flat tone.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow much power does it draw?\u003c\/summary\u003e\n    \u003cp\u003eThe kit is rated at 72 watts, which works out to about 3 amps at 24 volts for the pair. We'd fuse the circuit around 10 amps and use a relay on longer runs.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDo I need a relay?\u003c\/summary\u003e\n    \u003cp\u003eOn a short run to a panel switch you can wire it directly. On a larger boat with a long cable run, add a relay so the high current stays off your dash switch and the horns get full voltage.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow big are the horns?\u003c\/summary\u003e\n    \u003cp\u003eEach one is a 3.58 inch round disc, compact enough to mount on a hardtop, rail, or flybridge without taking up much space.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill it hold up in salt air?\u003c\/summary\u003e\n    \u003cp\u003eThe bodies are galvanized metal with a black finish. For the longest life, hit the bracket bolts with dielectric grease at install and angle the horn opening down so it sheds water.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I mount these outside?\u003c\/summary\u003e\n    \u003cp\u003eYes, they're designed for exposed mounting with the included brackets. Rubber isolators under the brackets help stop vibration rattle on a hardtop or rail.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eHella Marine S92 Dual-Tone Disc Horn Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eHella Marine\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e002768821\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e4082300558906\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSeries\u003c\/th\u003e\n\u003ctd\u003eS92 Series\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHorn Type\u003c\/th\u003e\n\u003ctd\u003eDual-Tone Disc Horn Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHigh Tone Frequency\u003c\/th\u003e\n\u003ctd\u003e435 Hertz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eLow Tone Frequency\u003c\/th\u003e\n\u003ctd\u003e335 Hertz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSound Level\u003c\/th\u003e\n\u003ctd\u003e113 Decibels\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003ctd\u003e24 Volt\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003ctd\u003e72 Watt\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDiameter\u003c\/th\u003e\n\u003ctd\u003e3.58 Inch Round\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eGalvanized Metal\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMounting Brackets\u003c\/th\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHorns Included\u003c\/th\u003e\n\u003ctd\u003eTwo (one high-tone, one low-tone)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this a 12-volt or 24-volt horn kit?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's 24 volt. It's built for boats and commercial rigs running a 24V system. If your boat is 12 volts, this specific kit won't be the right fit, so check your battery bank voltage first.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What comes in the kit?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Two disc horns, one 435 Hz high-tone and one 335 Hz low-tone, plus mounting brackets for both. Wiring, a switch, and a relay aren't included.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How loud is it?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"113 decibels. Running both tones together gives you a fuller, more noticeable sound than a single horn.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Why are there two different tones?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"One horn is tuned to 435 Hz and the other to 335 Hz. Sounded together, the two frequencies blend into a deeper, richer note that carries better and is harder to miss than a single flat tone.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How much power does it draw?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The kit is rated at 72 watts, which works out to about 3 amps at 24 volts for the pair. We'd fuse the circuit around 10 amps and use a relay on longer runs.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Do I need a relay?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"On a short run to a panel switch you can wire it directly. On a larger boat with a long cable run, add a relay so the high current stays off your dash switch and the horns get full voltage.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How big are the horns?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Each one is a 3.58 inch round disc, compact enough to mount on a hardtop, rail, or flybridge without taking up much space.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will it hold up in salt air?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The bodies are galvanized metal with a black finish. For the longest life, hit the bracket bolts with dielectric grease at install and angle the horn opening down so it sheds water.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I mount these outside?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes, they're designed for exposed mounting with the included brackets. Rubber isolators under the brackets help stop vibration rattle on a hardtop or rail.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Hella Marine","offers":[{"title":"Default Title","offer_id":45075534544989,"sku":"2009390","price":31.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_c6c8ef5e-a4e8-432d-bb88-175e4c04f97f.jpg?v=1789847385","url":"https:\/\/nvnmarine.com\/products\/hella-marine-s92-24v-dual-tone-disc-horn-kit-113-db","provider":"NVN Marine","version":"1.0","type":"link"}