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Continue to ChatTDI-QB-F-1E-N/O6-24D - 24V DC, NO/NC, Front Mount, Brass, 1 Lock Portion, Q type, Castell TDI Electronic Time Delay Isolator https://www.concretespares.ie/product/tdi-qb-f-1e-n-o6-24d-24v-dc-no-nc-front-mount-brass-1-lock-portion-q-type-castell-tdi-electronic-time-delay-isolator/