supply of red led signal lamps for mainred led signal lamps for main,supply of main led signal lamps (green aspect) for main colour light signal, as per rdso sp ec.no. rdso/spn/199/2010 rev 1.1 or latest, 110v ac retrofittable in existing cls housing and compatible with ac led ecr with inbuilt current regulator. [ warranty period: 60 months after the date of delivery ] ] , supply of main led signal lamps (yellow aspect) for main colour light signal, as per rdso s pec.no. rdso/spn/199/2010 rev 1.1 or latest,110v ac retrofi ttable in existing cls housing and compatibl e with ac led ecr withinbuilt current regulator [ warranty period: 60 months after the date of delivery ] ] , supply of main led signal lamps (green aspect) for main colour light signal as per rdso spe c. rdso/spn/199/2010 rev 1.1 or latest 110v ac retrofittable in existing cls housing .and compatible wit h ac led ecr with in built current regulator [ warranty period: 60 months after the date of delivery ] ] , red led signal lamps for main colour light signal, 110v ac retrofittable in existing cls housi ng and compatible with ac led ecr as per rdso specn. no. rdso/spn/ 199/2010(rev.1) or latest- [ warr anty period: 60 months after the date of delivery ] ] , supply of main led signal lamps (red aspect) for main colour light signal as per rdso spec. rdso/spn/199/2010 rev 1.1 or latest 110v ac retrofittable in existing cls housing and compatible with a c led ecr with inbuilt current regulator [ warranty period: 60 months after the date of delivery ] ] => limited