procurement of spare led flashing light beacon for ut of lakshadweep island lighthouses under cochin directorate-iala approved, marine led flashing light beacon with the following specifications : high efficiency luminious system nrange = 12nm @ t=0.74. nvertical divergence of 2.5°. nhorizontal output= 0° to 360°. nminimum luminous intensity=10, 000 candella. nintensity adjustment= user adjustable. nnominal operating voltage: 12v / 24v dc. naverage power=30 watt. nphotocell adjustable in lux, sunlight based on / off nflashing colour : day white, nflashing character: programmable, selectable from the 256 iala recommended flashing characters. nprogramming, configuration and operating status via pc, ir and remote monitoring system. nwaterproof = ip 67 or greater to ensure water tightness degree ( immersion resistant ) and suitable for saline environment. nshort-circuit, reverse-polarity, over-temperature and transient over-voltage protections. nwarranty of led lantern = 1year.