supply of supply, installation, testing & commissioning of iot- based water level indicator (wli) system for lhb ac & non-ac coaches. , supply, installation, testing & commissioning of iot-based water level indicator (wli) syste m for lhb ac & non-ac coaches to rdso specification is/rdso-cg/0002:2025 with corrigendum 1 of july 2 025. item no.-1 scope of supply, installation, testing & commissioning of iot-based water level indicator ( wli) system for 2450 lhb ac & scn coaches fitted with underslung water tank as per annexure-i [ warra nty period: 72 months after the date of delivery ] ] , item no.-2 scope of supply, installation, testing & commissioning and of iot-based water lev el indicator (wli) system for 1650 lhb non-ac coaches fitted with overhead water tank as per annexure- ii [ warranty period: 72 months after the date of delivery ] ]