tender for relay plug in type ,style qecx 61 ( ac led all aspect ) ac lamp proving unit ,slow to release neautral line relay , 4f-4b contacts , front & back contact metal tocarbon , shall be suitable for working in series with the 110v/15w ac led signalcomplete with plug board ,retaining clip & connectors confirming to brs 941a,irs:34& irs:s.23 and sts/e/relays /ac lit signal/09-2002. interlocking pin code abdhk.
