12V 24V Marine LED Dome Ceiling Light 5.5″ 7″ | Boat Cabin RV Interior Lighting

Marine LED Cabin Ceiling Light With Stainless or Brass Finish – 12V / 24V Dome Lamp This marine LED ceiling light is designed for interior cabin illumination in boats, yachts and RV installations where low power consumption, corrosion resistance and wide beam distribution are required. Available in 5.5″ and 7″ sizes, the dome light supports retrofit replacement projects and OEM lighting programs across marine and mobile environments. Product Description Wide beam cabin illumination The clear PC lens structure distributes light at a beam angle of ≥120°, improving ambient visibility in cabins, berths and navigation stations. This reduces shadow zones compared to narrow spotlight fixtures. Marine-grade material options Housing finishes include polished 304 stainless steel, titanium-nitride plated brass and powder-coated aluminum. These materials support different installation environments ranging from luxury yacht interiors to practical workboat cabins. Moisture-resistant electronics design The circuit board is treated with conformal coating to improve resistance against humidity, salt air and vibration. This helps maintain electrical reliability in enclosed marine spaces where condensation may occur. Dual lighting configuration for night operations Optional white/red LED configurations support night navigation visibility management. Red lighting helps preserve night vision when operating charts, instruments or deck access routes. Retrofit-friendly mounting sizes Standard base outer diameters of 140 mm and 178 mm allow installers to match existing ceiling cut-outs or mounting footprints. This reduces installation time and avoids unnecessary panel modification. Engineering Installation Note When replacing legacy halogen dome lights, matching both base diameter and wiring voltage is essential to ensure safe installation. LED fixtures typically reduce current draw while improving service life. Technical Specifications Overview Feature Value Buyer Impact Voltage 12V / 24V Compatible with most marine and RV systems Beam angle ≥120° Improves cabin visibility LED life 50,000 hrs Reduces maintenance cycles Mount size 140 / 178 mm Supports retrofit installations Current draw 120–220 mA Lower battery load Model No. Size (Base O.D.) Finish Input Voltage Lighting Color No. of LED’s LED Type Current Draw at 13.8V Luminous Intensity SM450018S 140mm (5-1/2”) Stainless 12 V Cool White 18 5 mm 120 mA 54 lm SM450018SW 140mm (5-1/2”) Stainless 12 V Warm White 18 5 mm 120 mA 54 lm SM450918S 140mm (5-1/2”) Stainless 12 V Cool White/Red 18W/9R 5 mm 120/60 mA 54/15 lm SM450918T 140mm (5-1/2”) TiN Brass 12 V Cool White/Red 18W/9R 5 mm 120/60 mA 54/15 lm SM450018W 140mm (5-1/2”) White Alum 12 V Cool White 18 5 mm 120 mA 54 lm SM450018WW 140mm (5-1/2”) White Alum 12 V Warm White 18 5 mm 120 mA 54 lm SM450918W 140mm (5-1/2”) White Alum 12 V Cool White/Red 18W/9R 5 mm 120/60 mA 54/15 lm SM452036S 140mm (5-1/2”) Stainless 12 V Warm White 36 SMD 220 mA 180 lm SM452036W 140mm (5-1/2”) White Alum 12 V Warm White 36 SMD 220 mA 180 lm SM470024S 178mm (7”) Stainless 12 V Cool White 24 5 mm 160 mA 72 lm SM470024SW 178mm (7”) Stainless 12 V Warm White 24 5 mm 160 mA 72 lm SM471224S 178mm (7”) Stainless 12 V Cool White/Red 24W/12R 5 mm 160/80 mA 72/20 lm SM470024W 178mm (7”) White Alum 12 V Cool White 24 5 mm 160 mA 72 lm SM470024WW 178mm (7”) White Alum 12 V Warm White 24 5 mm 160 mA 72 lm SM471224W 178mm (7”) White Alum 12 V Cool White/Red 24W/12R 5 mm 160/80 mA 72/20 lm SM472036S 178mm (7”) Stainless 12 V Warm White 36 SMD 220 mA 180 lm SM472036W 178mm (7”) White Alum 12 V Warm White 36 SMD 220 mA 180 lm SM472924S 178mm (7”) Stainless 12 V Neutral White/Red 24W/12R SMD 150/60 mA 120/15 lm SM472924W 178mm (7”) White Alum 12 V Neutral White/Red 24W/12R SMD 150/60 mA 120/15 lm Typical Applications Boat cabin lighting Yacht berth illumination RV ceiling retrofit lighting Navigation desk night lighting Reading lights in mobile living spaces Workboat interior lighting FAQ Can this LED dome light replace halogen cabin lights?Yes. Matching mounting size and voltage allows straightforward retrofit installation with reduced power consumption. Is red light necessary onboard?Red light helps preserve night vision during navigation or chart reading in dark conditions. Will stainless finish corrode in salt air?Polished stainless offers good corrosion resistance for indoor marine environments. Can the light run on 24V systems?Yes. 24V versions are available for commercial vessel electrical systems. How long do LED marine lights typically last?Quality LEDs can provide up to 50,000 operating hours under normal conditions.