3-5NM+ Solar Marine Lantern (SL-75)
The 3-5NM+ Solar Marine Lantern (SL-75) is a next-generation solar marine lantern with up to 5NM visible range. The lantern incorporates dual high-performance solar panels for maximum sunlight capture and utilises the latest Bluetooth® technology for convenient configuration and maintenance.
This model is supported by the SealitePro® mobile application, designed to allow for complete programming (via Bluetooth®) of the SL-75 lantern. An easy to use interface and with intelligence built-in, the App enables access to read and program the lantern functions from a mobile device up to 50 metres away.

This innovation reduces maintenance times, improves productivity, and reduces safety risks by minimising the need to climb onto a buoy or structure.
The SL-75 is now Satcom enabled. An optional integrated Iridium® Satellite module enables two-way monitoring and control using the Iridium® Low Earth Orbit satellite network. This feature gives the user full visibility, control and reporting of their assets via the Star2M portal.
Optional GPS synchronisation allows two or more units set to the same flash character to flash in unison, improving visual recognition of boundaries or marine channels. Optional GSM gives users the added ability to control and monitor the asset remotely.
Product Code: SL-75
FEATURE
- Bluetooth programmable
- High efficiency
- Low maintenance
- IR programmable
- 310 user-adjustable IALA flash characters
- User-replaceable battery in sealed battery compartment
- 17.2Ah NiMH battery for long service life & wide temperature range
- Completely sealed & self-contained

TECHNICAL SPECIFICATION
SL-75 | ||
Light Characteristics | ||
Light Source | High efficiency LED | |
Available Colours | Red, Green, White,Yellow, Blue | |
SL-75-7D Typical Maximum Intensity (cd) | Red – 98 Green – 104 White – 131 Yellow – 65 | |
SL-75-5D Typical Maximum Intensity (cd) | Red – 143 Green – 109 White – 183 Yellow – 87 | |
Visable Range (NM/km) | 3-5 / 5.5 – 9 | |
Horizontal Output (degrees) | 360 | |
Vertical Divergence (degrees) | 7.5 (standard) / 5 (optional) | |
Available Flash Characteristics | 310 plus custom character | |
Intensity Adjustments | Multiple intensity settings | |
LED Life Expectancy (hours) | >100,000 | |
Electrical Characteristics | ||
Circuit Protection | Integrated | |
Nominal Voltage (VDC) | 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) | 5 (2 x 2.5watt) | |
Power Supply | ||
Battery Type | High grade NiMH | |
Battery Capacity (Ah) – Standard | 17.2 | |
Battery Capacity (Ah) – Large | 215 | |
Nominal Voltage (V) | 3.6 | |
Physical Characteristics | ||
Body Material | LEXAN® Polycarbonate – UV stabilized | |
Lens Material | LEXAN® Polycarbonate – UV stabilized | |
Lens Design | Single LED Optic | |
Mounting | 3 types: 3 & 4 hole 200mm bolt pattern, 3 hole 150mm bolt pattern, 4 hole 162mm bolt pattern | |
Height (mm/inches) | 314 / 12 3/8 | |
Width (mm/inches) | 231 / 9 1/8 | |
Mass (lbs/kg) | 5.5 / 2.5 | |
Product Life Expectancy | Up to 12 years | |
Certifications | ||
EMC | FCC Part 15 Rules & ANSI C63.4: 2014. EN61000-6-2: 2005 (IEC 61000-6-2:2005) Part 6-2 Immunity. EN 61000-6-4: 2007 (IEC 61000-6-4: 2006) Electromagnetic compatibility (EMC) – Part 6-4 Emission. IEC 61000-4-2: 2008 Ed 2 Part 4-2 Electrostatic discharge immunity test. IEC 61000-4-3: 2006 Ed 3 Part 4-3. Radiated, radio-frequency, electromagnetic field immunity. | |
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 | • GPS Synchronisation • Bird Deterrent • SL-75-5D (5 Degree divergence model) • GSM Monitoring & Control System • Charging Port |
OPTION
- Satellite connectivity
- GPS synchronisation
- GSM monitoring
- 21.5Ah battery
- Custom flash patterns
- 50mm post mount adaptor plate
- Bird deterrent spike
GPS Synchronisation (optional)
Synchronise two or more lanterns to flash in unison via an internal GPS module. Synchronised flash helps to clearly distinguish from other aids to navigation and background lighting – ideal for rivers, marina entrances, channel marking and aquaculture applications.
GSM Monitoring & Control System (optional)
Access real-time diagnostic data and adjust lantern settings via cell-phone. Lantern can be configured to send alarms via SMS text messages or email including lantern reporting.
Bluetooth Programming and Maintenance
Completely programmable via the SealitePro® App, configure and monitor the SL-75 from a distance up to 50 metres. An inbuilt solar calculator confirms the lanterns optimal operating performance, at the set location.
Dual High Performance Solar Modules
Angled solar modules obtain maximum sunlight capture, allowing the unit to operate reliably in a range of low sunlight environments. Tilted solar modules are less susceptible to fouling or snow.
Accessible Via Star2M
The SL-75 is available with an optional integrated Iridium® Satellite module enabling two-way monitoring and control using the Iridium® Low Earth Orbit satellite network.
CERTIFICATION
- 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 :
- Solar Marine Lantern Type Sealite SL-15 1–2NM+
- 3-5NM Solar Marine Lantern (SL-C310 Series)
- 5-12NM+ Solar Marine Lantern (SL-C500/SL- C600)
- SolaMAX-65 Tideland Class 5 and 7 self-contained lantern
- Radar For Indonesia Marine Type HALO20+ SIMRAD
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