supply of ssdac signal conditioner card, dc dc converter card & relay drive cardssdac signal conditioner card, dc dc converter card & relay drive card,signal conditioner card no. 1 (ssc 1) for ssdac (cel make). as per rdso spec. no. rdso/s pn/177/2012 ver 3 or latest. make/brand : central electronics limited. [ warranty period: 30 months afte r the date of delivery ] ] , dc dc converter card for cel make, single section digital axle counter (ssdac) as per rds o specification no. rdso/spn/177/2012 (ver.3) or latest. make: m/s cel - sahibabad, up [ warranty perio d: 30 months after the date of delivery ] ] , modem card for cel make ssdac, as per rdso specification no. rdso/spn/177/2012 (ver.3) or latest. accepted make: m/s cel sahibabad [ warranty period: 30 months after the date of delivery ] ] , relay drive card for cel make single section digital axle counter (ssdac) as per rdso spec ification no rdso/spn/177/2012(ver.3) or latest. make : m/s cel- sahibabad, up [ warranty period: 30 m onths after the date of delivery ] ] , signal conditioning card no. 2 ( scc 2) for ssdac make - cel, as per rdso spec. no. rdso/ spn/177/2012 ver 3 or latest. make: central electronics limited [ warranty period: 30 months after the d ate of delivery ] ]