Turck BI2-S12-AZ31X has 1 recorded cross-reference match across 1 manufacturer. Compare the listed alternatives and check their source notes before selecting a replacement.
PDF page 15, table row 15. Printed type Prox; FORM=Close; FUNCTION=Direct. Direct means exact in that dimension; Close means similar with minor differences; Alternate means a different solution. Omron recommends candidate replacements for the Turck item; dimensions, characteristics or sensing distance can differ. Historical chart, date not printed; clerical errors possible. Manufacturer-listed directional selection candidate; verify current specifications and application suitability. Bidirectional discovery does not imply symmetric technical interchangeability. No transitive equivalence inferred.
Counts describe recorded relationships, not stock, sales, testing or independent qualification. Manufacturer-and-part identities remain separate. Indexing dates do not establish current specifications or availability.
Check current manufacturer documents and electrical, mechanical, environmental and application requirements before selecting a replacement.