corrigendum : supply of relay qta2 ac immune, plugin type style. , relay qta2 ac immune, plugin type style dc neutral track, 9 ohm, 2f/1b contacts front and back contacts metal to carbon, complete with plug board, retaining clip & connectors conforming to brs:9 39a, brs:966, (appendix f2), irs:s-34 and irs:s-23 (as applicable). the interlocking code for this unit shal be fghkx. [ warranty period: 30 months after the date of delivery ] ] , relay qta2 ac immune, plugin type style dc neutral track, 9 ohm, 2f/1b contacts front and back contacts metal to carbon, complete with plug board, retaining clip & connectors conforming to brs:9 39a, brs:966, (appendix f2), irs:s-34 and irs:s-23 (as applicable). the interlocking code for this unit shal be fghkx. [ warranty period: 30 months after the date of delivery ] ]