supply of signal exchange light - flashing led lamp (green and red) at outside of the drivers ca b for exchange of signal between driver/guard and the station master during train operation, it shall b e conforming to rdso specification no. elrs/spec/pr/0022 latest,visibility at 2km in day and night, fr equency of flashing 55-65 per minute, ip66 protection. the overall general amangement shall be follo wed as per icf drg.no.889-7-2-007 latest stand suitableto vb rakes as per rdso specification no. rd so/pe/spec/emu/0196-2019 along with latest annexure and addendurn/corrigendum. icf drg.no.889- 7-2-007 latest spec:rdso specification no. elrs/spec/pr/0022 latest & rdso specification no. rdso/ pe/spec/emu/0196-2019 along with latest annexure and addendurn/corrigendum. [ warranty perio d: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]