supply of list of items as belowlist of items as below,charging unit to sanrok part no. 2ed-254-3523 for automatic smoke/fire detection with alarm system for ac coaches as per rdso spec no. rdso/2008/cg-04 (rev-6) or latest. [ warra nty period: 30 months after the date of delivery ] ] , electronic voice message sounder to sanrok part no. 2ed-254-1940 for automatic smoke/fire detection with alarm system for ac coaches as per rdso spec. no. rdso/2008/cg-04 (r ev-6) or latest. [ warranty period: 30 months after the date of delivery ] ] , inline filter sanrok part no. 2ed-254-1931 as per rdso specification no. rdso/20 08/cg-04 (rev-6) or latest. [ warranty period: 30 months after the date of delivery ] ] , internal filter cartridge of vesda compact laser detector (for vlf) sanro k part no. 2ed-255-4988 per rdso specification no. rdso/2008/cg-04 (rev-6) or latest. [ warrant y period: 30 months after the date of delivery ] ] , strobe light with hooter to sanrok part no. 2ed-254-1939 for automatic smoke/fir e detection with alarm system for ac coaches as per rdso spec. no. rdso/2008/cg-04 (rev-6) or la test. [ warranty period: 30 months after the date of delivery ] ] , public announcement module (pa module) to sanrok part no. 2ed-255-1998 for a utomatic smoke/fire detection with alarm system for ac coaches as per rdso spec. no. rdso/2008/ cg-04 (rev-6) or latest. [ warranty period: 30 months after the date of delivery ] ]