supply of supply of electrically operated lifting barrier set as per specification no-rdso/spn/208/2012 to work on 24v dc and hand generatorsupply of electrically operated lifting barrier set as per specification no-rdso/spn/208/2012 to work on 24v dc and hand generator,supply of electrically operated lifting barrier set as per specification no-rdso/spn/208/2012 to work on 24v dc and hand generator back up with 32 ft long g.i boom each set each set consisting ,2 no s. of lifting barrier but without fringes , pedestals each with circuit controllers / limit switches of minimum 1 0000 operations life cycle, hand crank, 2 electric motors ,2 sets of booms,2 stop board boom light boxes, m. s counterweights and 2 nos. of boom support with boom motorized locking along with hand generator to op erate 2 barrier of one set .hand generator to have necessary switches/buttons to operate one or both barri ers, operate boom lock only ,or operate with push buttons in case of 24 v dc is available [ warranty perio d: 30 months after the date of delivery ] ]