supply of supply, installation, and commissioning of gps-based personal tracking devices with pre-installed sim (compatible network) with 4 (four) years coverage (1-year warranty + 3 years amc) for monitoring track patrolling, including mapping, customization in software, software installation, android app, report generation, and related assistance as per railway board letter no. 2017/track-1/29/8 dated 16.01.2018 (specifications & annexure-a enclosed)supply, installation, and commissioning of gps-based personal tracking devices with pre-installed sim (compatible network) with 4 (four) years coverage (1-year warranty + 3 years amc) for monitoring track patrolling, including mapping, customization in software, software installation, android app, report generation, and related assistance as per railway board letter no. 2017/track-1/29/8 dated 16.01.2018 (specifications & annexure-a enclosed),supply, installation, and commissioning of gps-based personal tracking devices with pre-ins talled sim (compatible network) with 4 (four) years coverage (1-year warranty + 3 years amc) for monitori ng track patrolling, including mapping, customization in software, software installation, android app, report generation, and related assistance as per railway board letter no. 2017/track-1/29/8 dated 16.01.2018 (s pecifications & annexure-a enclosed) [ warranty period: 12 months after the date of delivery ] ] , amc [ warranty period: 1 years, amc period: 3 years, rate of discounting: 10 % ] ] at (location) sse/p.way/depot/purna, scr telangana 144.00 numbers