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Continue to ChatTDI-QS-F-1S-N/O6-24D - 24V DC, NO/NC, Front Mount, Stainless Steel, 1 Lock Portion, Castell TDI Electronic Time Delay Isolator https://www.concretespares.ie/product/tdi-qs-f-1s-n-o6-24d-24v-dc-no-nc-front-mount-stainless-steel-1-lock-portion-castell-tdi-electronic-time-delay-isolator/