SL50/SL52 3-4nm Self-Contained Lantern

The larger 5watt solar module(s) and 4.5Ah battery of the SL50 and SL52 lantern allow the units to operate at high duty cycles, or in lower sunlight regions.

The SL50 and SL52 lanterns have been widely adopted by professionals in the marine sector, including ports and harbors, transport departments, and coast guards.

The SL50 and SL52 lantern use 20 ultra-high intensity LEDs as a light source, and incorporate a 4.5Ah sealed battery and one (SL50) or two (SL52) 5watt solar module(s). As with all Sealite lanterns, the units use the Sealite LED 360 degree reflector (US Pat. No. 6,667,582 & AU Pat. No. 778,918) which increases the intensity and uniformity of the horizontal output.

These models are extremely versatile and offer the user enormous flexibility including on-site setting to any of over 250 IALA recommended flash characters, and any of 4 intensity settings. The 20 LED flasher units are interchangeable between lanterns, allowing the operator to replace the flasher unit with another color at any stage of the product’s life. The battery or lens can be easily replaced after years of service, and the internal components are encased in a large high-impact resistant housing.

Once installed, operation of the SL50 and SL52 requires no operator intervention. During daylight hours the solar module(s) will charge the battery through an advanced switch-mode regulator incorporated into the flasher unit. The lantern will automatically begin operation at dusk – once the ambient light threshold drops sufficiently. Coupled with LED technology, and a highly efficient DC/DC converter, the lantern may provide over 10 days of continuous operation without sunlight (14 hour darkness, 12.5% duty cycle).

The SL50 and SL52 is also available with hard-wire or GPS synchronization