supply of relay,supply of q-series neutral line relay style qn1k 1000 ohm, 24v dc, 6f/6b complete with p lug board (base plate), connectors and retaining clips etc. and conforming to brs:930 & rdso letter no sts /e/relays/uea/pi dated 30.05.97 annexure i and irs:s-34/68 amd.6 & s-23/88 amd.1 or latest. the interloc king code for this unit shall be bdekx. [ warranty period: 30 months after the date of delivery ] ] , supply of relay, ac immune, plug-in type, style qna1k, neutral line, 24v dc 1000 ohms 6 f/6b contacts, front and back contacts metal to carbon with plug board, retaining clip & connectors confor ming to brs:931a, irs:s/60/78 amd.1, irs:s-34/68 amd.6 & s-23/88 amd.1 & rdso spec. no. sts/e/relays/uea/pi dated 30.05.97annexure ii or latest.. the interlocking code for this unit shall be cdek y. [ warranty period: 30 months after the date of delivery ] ]