supply of supply of remote terminal unitsupply of remote terminal unit, supply of remote terminal unit ( rtu ) to monitor 128 digital and 16 analog inputs as per irs: s​99 / 2006 ( amd-3 ) or latest. with one number of inbuilt dual card leased line modem for networking purpose. the rtu should be compatible for networking with existing nmdl system of rnc division. , supply and installation of external modem for networking of rtus as per rdso specification no. irs:s-99 / 2006, amdt.-3 or latest, suitable with existing data loggers / rtus of ranchi division. , supply of 128 digital input tag block suitable with existing data loggers / rtus of ranchi division.