Tenders for Supply of Digital Indicating System Speed Display In Existing Microprocessor Based Electronic Speed Cum E Nergy Monitoring System Esmon In Place Of Analog Display System, Without Changing Its Other Specification An D Requirements As Per Elrs/Spec/Spm/0002 Rev.4 Or Latest. Material Must Be Retrofittable In Existing Housing Of Spm Master And Spm Slave Of Wag-9H/Wap-7 Locomotives. Warranty Period: 30 Months After The Date O F Delivery