supply of signal exchange light - flashing led lamp (green and red)signal exchange light - flashing led lamp (green and red),signal exchange light - flashing led lamp (green and red) at outside of the drivers cab for exchange of signal between driver/guard and the station master during train operation, it shall be conforming to rdso specification no. elrs/spec/pr/0022 latest,visibility at 2km in day and night, frequency of flashing 55-65 per minute, ip66 protection . the overall general amangement shall be followed as per icf drg.no.889-7-2-007 latest stand suitableto vb rakes as p er rdso specification no. rdso/pe/spec/emu/0196-2019 along with latest annexure and addendurn/corrigendum. war ranty period: 30 months from the date of supply. [ warranty period: 30 months after the date of delivery ] ]