supply of charging unit , charging unit sanrok part no. - 2ed-245-4985 firms offer:-make/brand-sanrok [ warranty period: 30 months after the date of delivery ] ] , heat detector as per sanrok part no. 2ed-245-3544 suitable for main control m odule.[make:sanrok] [ warranty period: 30 months after the date of delivery ] ] , smoke detector as per sanrok part no. 2ed-245-3543 suitable for main control module. [ warranty period: 30 months after the date of delivery ] ] , brake valve connector to sanrok part no. 2ed-254-5109 of automatic smoke/fire detection with alarm system for ac coaches as per rdso spec no. rdso/2008/cg-04 (rev-6). [ warranty period: 30 months after the date of delivery ] ] , protection card for automatic fire smoke detection and suppression system (fdss) in railwa y coaches as per the rdso spec. no. rdso/2013/cg-06 (rev.2) amdt-1 or latest. make- sanrok. [ warra nty period: 30 months after the date of delivery ] ] , display card sanrok part no.- 2ed2454982b [ warranty period: 30 months after the date o f delivery ] ]