Sealite SLC420 4-5nm+ Solar Marine Lantern

New product

Shipping Rates

More info

Sealite SLC420 4-5nm+ Solar Marine Lantern

For the latest information on prices and availability please contact us on: (800) 596 7245 or

The SLC420 is a robust, completely self-contained 4–5nm+ Solar LED Marine Lantern which incorporates a 36 LED light source for even greater light intensity. The 3 & 4 hole bolt pattern base fits directly onto existing 200mm OD industry standard mounts for ease of installation.

The chassis of the SLC420 is made from cast aluminium, subject to 7-stage powder-coating in high visibility IALA colours for daytime recognition, with UV-stabilised rubber corners and gaskets providing a superior IP68 waterproof rating – the best in the industry.

Four (4) premium-grade solar modules are integrated into the assembly and mounted to collect sunlight at all angles.

The unit is capable of producing any of 256 IALA recommended flash characters – field-adjustable without the need for ancillary equipment.

The tough polycarbonate lens is specifically designed for use with LEDs and incorporates an environment-friendly bird spike – deterring unwelcome bird life. The lens design also ensures that vessel operators clearly see the light from above, when passing the AtoN.

Optional RF Synchronisation or GPS Synchronisation

The SLC420 may be fitted with an optional RF Synchronisation module for short range flash synchronisation. For flash synchronisation of lanterns installed over longer ranges, a GPS module may be fitted.

When lanterns flash in synchronisation they can be clearly distinguished from other navaids and confusing background lighting – ideal for rivers, marina entrances, channel marking and aquaculture.

Optional GSM Monitoring & Control System

The SLC420 may also be fitted with GSM Monitoring and Control – enabling users to access real-time diagnostics data and change lantern settings via cell-phone or PC interface.

Optional Radio Control System

Radio Control may be fitted to the SLC420 model enabling users to remotely modify the setup of their lantern via handheld radio controller.

The following downloads are availableDownload
Product Specifications [ download 1.5 MB ]
Installation Manual [ download 1.1 MB ]
Product brochure Espanõl (Spanish language version) [ download 1.5 MB ]

Features of the Sealite SLC420

  • 36 ultra-high intensity LEDs
  • 3 & 4 hole bolt pattern on 200mm OD base for ease of installation
  • 4x 5watt (20watts total) multicrystalline solar modules, ensuring maximum light collection to charge the battery
  • Internal 24Ah battery - user replaceable
  • Robust 7-stage powder-coated aluminium chassis with rubber extruded corners & high visibility IALA colours for daytime recognition
  • Automatic night activation

Advantages of the Sealite SLC420

  • Simplicity of design ensures ease of maintenance in the field
  • Heavy-duty aluminium construction
  • All components user-replaceable in the unlikely event of damage
  • 256 IALA flash patterns & user-replaceable battery
  • Tempered glass solar modules for peak efficiency
  • IP68 waterproof & full 3 year warranty
Light Characteristics
Light Source 36 ultra-high intensity LEDs
Available Flash Colors Red, Green, White, Yellow, Blue
Maximum Available Intensity R- 142cd, G- 125cd, W- 119cd, Y- 102cd
Visible Range 4-5nm+
Horizontal Output 360 degrees
Vertical Divergence 9 degrees
Reflector Type Omnidirectional 360° LED Reflector (US Pat. No. 6,667,582. AU Pat. No. 778,918)
Available Flash Characteristics Up to 256 IALA recommended (user adjustable)
Intensity Adjustments Adjustable in 25% increments
LED Life Expectancy >100,000 hours
Electrical Characteristics
Current Draw Refer to Sealite Power Calculator
Circuit Protection Integrated
Nominal Voltage 12v
Autonomy >15 days (14 hour darkness, 12.5% duty cycle)
Temperature Range -40 to 80°C
Solar Characteristics
Solar Module Type Multicrystalline
Output 20watt (4 x 5watt)
Solar Module Efficiency 14%
Charging Regulation Microprocessor controlled
Power Supply
Battery Type SLA (Sealed Lead Acid)
Battery Capacity 24Ah
Nominal Voltage 12v
Battery Service Life Average 5 years
Physical Characteristics - Lights
Body Material 7-stage powder-coated aluminium chassis with UV-stabilised rubber corners & gaskets
Lens Material LEXAN® Polycarbonate - UV-stabilised
Lens Diameter (mm/inches) 150 / 5 7/8
Lens Design External optics with interior flute design
Mounting 3 & 4 hole bolt pattern on 200mm OD base
Height (mm/inches) 570 / 22 2/5
Width (mm/inches) 233 / 9 1/5
Mass (Kg/lbs) 13.9 / 30 5/8
CE EN61000-6-3:1997, EN61000-6-1:1997
Quality Assurance ISO9001:2008
Waterproof IP68
Intellectual Property
Patents US Pat. No. 6,667,582. AU Pat. No. 778,918
Trademarks SEALITE® is a registered trademark of Sealite Pty Ltd
Warranty Full 3 years


13 other products in the same category:

QR code


Maryland Nautical uses cookies to enhance your e-commerce experience.  To view more information about our cookie use, click here to view our Privacy Policy