2-3NM Solar Marine Lantern (SL-70)

Solar Marine Lantern (SL-70)
Solar Marine Lantern (SL-70)

The Sealite SL-70 is exceptional in its unique ability to be able to ‘track the sun’ and operate reliably in low sunlight conditions. The 2-3NM Solar Marine Lantern (SL-70) has been proven to operate as a 2-3+ nautical mile compact buoy lantern in various low sunlight environments such as Britain, Canada and Europe.

Made from tough, durable polycarbonate and using the latest high intensity LEDs, the SL-70 lantern boasts dual high-performance solar modules. These solar modules are angled to obtain maximum sunlight capture, allowing the unit to operate reliably in a range of low sunlight environments.

The SL-70 can be installed in minutes and requires no operator intervention. The flash characters are easily adjusted onsite by the user, and the lantern has a permanent ON/ OFF switch for easy storage.

The SL-70 comes with standard rotary switches for convenient in-field changes of flash characters and intensity selection. In addition, the unit may be provided with an IR programmer for added functionality. Programmable features include; flash code adjustment, battery diagnostics and lux adjustment.


Optional GPS Synchronisation

The SL-70 is available with optional GPS Synchronisation. Two (2) or more lights can be synchronised to flash in unison via an internal GPS module. 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 Light Configuration

In high sunlight regions, the SL-70 intensity settings may be increased to provide a range of >3 nautical miles (colour dependant).

Optional Larger Battery Pack

In regions where additional autonomy is required, the SL-70 can be supplied with a larger 16Ah battery pack – this greatly extends the operational autonomy.



  • High efficiency
  • Low maintenance
  • IR programmable
  • 256 user-adjustable IALA flash characters
  • User-replaceable battery in sealed battery compartment
  • 8Ah NiMH battery for long service life & wide temperature range
  • Completely sealed & self-contained


Light Characteristics
Light Source LED
Available Colours Red, Green, White,Yellow, Blue
Typical Maximum Intensity (cd)† Red – 24.7 Green – 26.6 White – 29.2 Yellow – 18.8
Visable Range (NM/km) AT @ 0.74: 2–3+
AT @ 0.85: 2.3–3.5+
Horizontal Output (degrees) 360
Vertical Divergence (degrees) 7
Available Flash Characteristics Up to 256 IALA recommended (user adjustable)
Intensity Adjustments Multiple intensity settings
LED Life Expectancy (hours) >100,000
Electrical Characteristics
Current Draw (mA) Refer to Sealite Power Calculator
Circuit Protection Integrated
Nominal Voltage (V) 3.6
Autonomy (days) >30 (14 hour darkness, 12.5% duty cycle)
Temperature Range -40 to 80°C
Solar Characteristics
Solar Module Type Monocrystalline
Output (watts) 3.5 (2 x 1.75watt)
Power Supply
Battery Type High grade NiMH
Battery Capacity (Ah) 8
Nominal Voltage (V) 3.6
Physical Characteristics
Body Material LEXAN® Polycarbonate – UV stabilized
Lens Material LEXAN® Polycarbonate – UV stabilized
Lens Diameter (mm/inches) 150 / 5 7/8
Lens Design Single LED optic
Mounting 200mm bolt pattern
Height (mm/inches) 240 / 9 1/2
Width (mm/inches) 231 / 7 1/8
Mass (lbs/kg) 1.4 / 31/8 (SL-70-16AH 1.6 / 31/2)
Product Life Expectancy Up to 12 years
CE EN61000-6-1:2007, IEC61000-6-1:2005,
EN61000-6-3:2007, IEC61000-6-3:2006
IALA Signal colours compliant to IALA E-200-1
Quality Assurance ISO9001:2015
Waterproof IP68
Intellectual Property
Trademarks SEALITE® is a registered trademark of Sealite Pty Ltd
Warranty * 3 years
Options Available • IR Programmer
• GPS Synchronisation
• 16Ah battery
• 50mm pole mount adapter plate

Cost Effective

  • Solar Powered
  • No running costs
  • Low ongoing maintenance costs
Technical Illustrations
Technical Illustrations

Easy Install

  • No trenching of cables
    No mains power

High Performance

  • Dusk-to-dawn or on demand operation

Optional Add Ons

  • Infrared Output
  • Radio Control
  • Mounting Solutions


  • No bulbs blown – ever
  • Latest LED technology
  • No Moving parts


  • GPS synchronisation
  • 16Ah battery
  • Custom flash patterns
  • 50mm post mount adaptor plate
  • Bird deterrent spike


  • CE: EN61000-6-1:2007. EN61000-6-3:2007
  • IALA: signal colours compliant to IALA E-200-1
  • Quality Assurance: ISO 9001:2015
  • Waterproof: IP68

Read more : 2-3NM Solar Marine Lantern (SL-60)

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.