What it is and where it fits
The Siemens 6ES7141-1BD30-0XA0 is a SIMATIC DP expansion module EM 141 for the ET 200X distributed I/O family. It provides 4 digital inputs rated at 24 V DC, terminated on a 5-pin M12 connector, with IP65 protection so it can mount directly on-machine without an enclosure.
Key ratings that govern field wiring
Unshielded cable runs are good for up to 30 m; if you need longer, shielded cable (not spec'd here) extends that margin. Power draw is minimal: 1.5 W typical, pulling 16 mA from the 5 V backplane bus. The 24 V sensor supply comes from the base module, not this card.
Sourcing for a project milestone
Because the module is current-production, there's no supply risk hitting your commissioning window – it's a standard catalog line from Siemens. An RFQ will confirm lead time to your install date; typical availability for this part supports project schedules without scrambling for spares.