supply of relay ac immunerelay ac immune,relay ac immune ,plug- in type, style qta2 dc neutral track ,9ohm, 2f-1bcontacts, front & b ack contacts metal to carbon, complete with plugboard retaining clip and connectors confirming to brs:93 9a,brs:966(appendixf2)irs:s 34 & irs:s 23 (as applicable).the interlocking code for this unit shall be fgh kx [ warranty period: 30 months after the date of delivery ] ] , relay, ac immune, plug-in type, style qspa1 neutral line, slow to pickup, 24v dc 8 f/4b contacts, front & back contacts metal to carbon, complete with plug board retaining clip & connectors conforming to brs-933a, irs:s-60, irs-s-34 & irs-s-23 (as applicable). the interlocking code for this unit shall be abdej. [ warranty period: 30 months after the date of del ivery ] ]