The MLED-215 operates from an external power source while the SolaLED-215 - shown here - incorporates an integral solar panel and a choice of two battery types and two capacities. Standard is lead acid, but nickel metal halide is available for extreme low temperatures to ensure that there is no mid-winter fade-out, wherever the lantern is installed.

Both versions offer a range of 3NM, coupled with minimal maintenance requirements and a service life of seven years on station.

Long-life LEDs and highintegrity electronics are housed in a tough UV-resistant polycarbonate enclosure. Tideland says the lantern won't need to be opened during its service life and the enclosure will even withstand being submerged in salt water.

There's a choice of three programming modes. The MLED-215 and SolaLED-215 can be factory-programmed to the required setting or, alternatively, the user can programme it either by radio remote controller or from a laptop using Tideland's LEDCOMM program.

In addition to code setting, the LEDCOMM program allows the user to set preferred levels for power/intensity, photo cell switching and low voltage disconnect/activation.

Since LED light output varies with temperature, Tideland Signal has also incorporated a temperature sensing and current compensation program within both lanterns.

to ensure the lanterns' intensity remains constant regardless of the temperature.

In addition to radio remote programming, visual reporting of the state of battery charge and, in the case of the MLED215, upgradeable remote GPS synchronisation for multiple units are available as options.

Both lanterns are available in all the standard IALA colours and also blue. A high-efficiency DC to DC converter is incorporated, providing virtually constant luminous output under a wide range of input power conditions. LED service life is calculated at 100,000 hours.

Tideland Signal T: +44 (0) 1444 872240 F: +44 (0)1444 872241 E: sales@tidelandsignal.ltd.uk