Tenders for Supply of Microprocessor Based Speedometer Cum Recorder & Monitoring System Esmon For Conventio Nal Tap Changer Electric Locomotives, Rdso Specification No. Elrs/Spec/Spm/002Rev.4 Issued On 17.07.2 018 With Latest Amendment With All Accessories. Warranty Period: 30 Months After The Date Of Delivery