supply of marine led lantern / flasher and other electrical items for koteshwar, mandvi and bhadreshwar lighthouses under gandhidham directorate supply of marine led lantern / flasher and other electrical items for koteshwar, mandvi and bhadreshwar lighthouses under gandhidham directorate , long range led marine lantern : ( make: sealite / tideland / sabik-carmanah / wealthmarine / vega ) ( a ) long range led marine lantern : light source: high efficiency leds. ( b ) colour of light: white, visible range ( nm ) : at 0.74 / 19nm, horizontal output: 0 - 360º, vertical output: >1.5º. ( bidders shall quote the equipment of having range 19nm and above only ) ( c ) available flash characteristics: user selectable up to 310 including 256 iala recommended & 1 custom. ( d ) nominal voltage ( vdc ) : 24v dc. ( e ) circuit protection: polarity protected. ( f ) auto day / night mode, ( g ) uv stabilized acrylic lens, ( h ) programmable and user intensity adjustment, ( i ) beacon should be hermetically ( completely sealed from rain water, moisture, heat, wind etc ) sealed and constructed of corrosion-resistant. ( j ) lantern should be compatible with physical, electrical and recommendation iala e 200- 1 marine signal lights colours compliance ( white flash for mandvi, bhadreshwar and koteshwar ) . ( k ) the firm should be provide warranty of 3 years + additional 2 years so that any defect present or occurred after commissioning it should be attended immediately. ( l ) body material: 7 stage powder coated aluminium or above. ( m ) water proof: ip68 ( n ) mounting: mounting bolt pattern. ( o ) led life expectancy ( hours ) : > 1, 00, 000 ( p ) temperature range:-10° to +60° c , mppt solar charge controller 24v / 40a - 3 nos for mandvi, bhadreshwar and koteshwar + 2 spare