supply of supply of relay qnn1 (6f/2b) , supply of relay qnn1 (6f/2b), plug in type, style qnn1, twin dc neutral line, 24 v , 6f/2b contacts each for lh and r h, front and back contacts metal to carbon, complete with plug board (base plate) retaining clip & connectors conforming to brs:96 0, irs:s- 60, irs:s-34 & irs:s-23 and as applicable latest update if any. the interlocking code for this unit shall be acdek, inspectio n by rdso [ warranty period: 30 months after the date of delivery ] ] , supply of relay qnn1 (6f/2b), plug in type, style qnn1, twin dc neutral line, 24 v , 6f/2b contacts each for lh and r h, front and back contacts metal to carbon, complete with plug board (base plate) retaining clip & connectors conforming to brs:96 0, irs:s- 60, irs:s-34 & irs:s-23 and as applicable latest update if any. the interlocking code for this unit shall be acdek, inspectio n by rdso [ warranty period: 30 months after the date of delivery ] ] , supply of relay qnn1 (6f/2b), plug in type, style qnn1, twin dc neutral line, 24 v , 6f/2b contacts each for lh and r h, front and back contacts metal to carbon, complete with plug board (base plate) retaining clip & connectors conforming to brs:96 0, irs:s- 60, irs:s-34 & irs:s-23 and as applicable latest update if any. the interlocking code for this unit shall be acdek, inspectio n by rdso [ warranty period: 30 months after the date of delivery ] ]