supply of flasher light ,strobe light & public announcement moduleflasher light ,strobe light & public announcement module,public announcement module (pa module) as per sanrok part no. 2ed-254-1929/3 for very early smoke/fire detection and alarm system for ac coaches as per rdso specification no. rdso/200 8/cg-04 rev-05. [ warranty period: 30 months after the date of delivery ] ] , flasher light (sanrok part no. 2ed-255-1972) spare parts of automatic smoke/fire detecti on with alarm system for ac coachesas per rdso specification no. rdso/2008/cg-04. (rev-5) [ warranty period: 30 months after the date of delivery ] ] , strobe light with hooter for automatic smoke/fire detection with alarm system as per sanro k part no. 2ed-254-1939 or its equivalent for lhb ac coaches as per rdso specification no. rdso/2008/c g-04 rev-05. [ warranty period: 30 months after the date of delivery ] ]