Sealite SLC420 4-5nm+ Solar Marine Lantern

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Sealite SLC420 4-5nm+ Solar Marine Lantern

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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 Source36 ultra-high intensity LEDs
Available Flash ColorsRed, Green, White, Yellow, Blue
Maximum Available IntensityR- 142cd, G- 125cd, W- 119cd, Y- 102cd
Visible Range4-5nm+
Horizontal Output360 degrees
Vertical Divergence9 degrees
Reflector TypeOmnidirectional 360° LED Reflector (US Pat. No. 6,667,582. AU Pat. No. 778,918)
Available Flash CharacteristicsUp to 256 IALA recommended (user adjustable)
Intensity AdjustmentsAdjustable in 25% increments
LED Life Expectancy>100,000 hours
Electrical Characteristics
Current DrawRefer to Sealite Power Calculator
Circuit ProtectionIntegrated
Nominal Voltage12v
Autonomy>15 days (14 hour darkness, 12.5% duty cycle)
Temperature Range-40 to 80°C
Solar Characteristics
Solar Module TypeMulticrystalline
Output20watt (4 x 5watt)
Solar Module Efficiency14%
Charging RegulationMicroprocessor controlled
Power Supply
Battery TypeSLA (Sealed Lead Acid)
Battery Capacity24Ah
Nominal Voltage12v
Battery Service LifeAverage 5 years
Physical Characteristics - Lights
Body Material7-stage powder-coated aluminium chassis with UV-stabilised rubber corners & gaskets
Lens MaterialLEXAN® Polycarbonate - UV-stabilised
Lens Diameter (mm/inches)150 / 5 7/8
Lens DesignExternal optics with interior flute design
Mounting3 & 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
CEEN61000-6-3:1997, EN61000-6-1:1997
Quality AssuranceISO9001:2008
Intellectual Property
PatentsUS Pat. No. 6,667,582. AU Pat. No. 778,918
TrademarksSEALITE® is a registered trademark of Sealite Pty Ltd
WarrantyFull 3 years


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