The customer can select constant light ouput or flashing upon installation. The HDL 103 LED lighting system conforms to CAP 437 standards for helideck lighting and also ICAO annex 14 volume II. The lamp utilises 6 off 1.2W LEDs with very low power consumption and 360 degrees coverage. All units are independantly photometrically tested, are IP66 and IP67 with easy installation and maintenance. An optional wire gurad is available for extra protection.