The E3S-R1B42P1: It is an active-production part, meaning it remains in the current catalog and is not subject to a phase-out or last-time-buy notice.
Physical and sourcing profile
Because no output type (NPN/PNP), sensing distance, wiring diagram, or supply voltage appears in the available product data, the buyer must confirm these parameters from the full Omron datasheet before committing the BOM line. The datasheet for the E3S-R1B42P1 is available from Omron and should be consulted for detailed electrical and mechanical specifications.