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3" Round Underwater RGB LED Light
The SC3-RGB-ALTB is a 3-inch round underwater RGB LED light designed for easy mounting on pontoon and aluminum boats. It features an aluminum housing and a unique through-bolt design that simplifies installation. Just slide the bolt through a hole on your pontoon bracket or transom, tighten the nut, and you’re good to go! These are RGB transom lights, meaning they must be operated through an RGB LED light controller.
The SC3-RGB-ALTB is built to last with a clear gel-filled design that ensures the light will never leak. Its tough, scratch-resistant tempered glass lens and corrosion-resistant housings ensure long-lasting performance, while advanced features like transient surge and reverse polarity protection safeguard sensitive electronics. Thermal throttling technology also ensures safe operation even when the unit is out of the water. The IP68 rating guarantees the light is completely waterproof.
The SC3-RGB-ALTB lights deliver up to 3,000 lumens from six pairs of RGB LEDs, featuring a 120° beam angle that illuminates your underwater world with a full spectrum of colors. This 24-watt light draws two amps at 12 volts and is compatible with 12-volt, 24-volt, or 36-volt power systems.
Shadow-Caster SC3-RGB-ALTB lights come with a 3′ submersible-grade cable, mounting screws, and a 3-year standard warranty for peace of mind. These powerful and durable lights are designed to enhance your boating experience and make a lasting impression on the water.
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Yes — we are an authorized US dealer for 300+ marine electronics brands. Every order ships with the manufacturer’s full warranty.
Yes. Our products are designed for both seasoned boaters and first-time owners. Each unit ships with a manufacturer manual, and we’re happy to answer setup questions over email.
Yes. Marine electronics are engineered for saltwater spray, vibration, and weather. Check the product specs for IPX waterproof rating and saltwater certifications.
Rinse with fresh water after saltwater exposure, store in a dry place, and follow your manufacturer’s cleaning and storage instructions.
Yes — we carry replacement parts, mounts, transducers, cables, and accessories for the brands we stock.
Every product ships with the original manufacturer’s manual. Digital copies and detailed installation guides are typically available on the brand’s website.
Yes — every order includes the full manufacturer warranty. Coverage length varies by brand (typically 1–3 years for Garmin, Lowrance, Raymarine, Simrad, Humminbird, Furuno, and others).
Register directly with the manufacturer using your unit’s serial number. Manufacturer registration is the fastest path to warranty support if you ever need it.
Defects in materials and workmanship under normal use. Damage from impact, improper installation, or saltwater corrosion (without protection) may be excluded. Check brand-specific terms in your unit’s documentation.
Some manufacturers offer extended-coverage programs through their registration portals. We don’t sell third-party warranty programs.
Orders placed before 4pm EST Monday–Friday ship the same business day via UPS from our NJ or FL warehouses. Continental US delivery typically takes 3–7 business days for Economy.
Yes — we offer volume pricing for fleet operators, marinas, dealers, and commercial customers. Email support@marineelectronicsdepot.com with your needs.
Email support@marineelectronicsdepot.com or call during business hours (Mon–Fri 9am–5pm ET). We’re happy to help with pre-purchase questions, order status, or post-sale support.
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