The Siemens 6ES7141-1BF01-0XB0 is a SIMATIC DP basic module for the ET 200X distributed I/O system. It provides 8 digital inputs at 24V DC, terminated via a 5-pin M12 connector, with double-assignment capability. Rated IP66/67, it's built for harsh environments. The integrated PROFIBUS DP interface runs at up to 12 Mbit/s, and the module includes an integrated power supply interface for daisy-chaining.
The M12 connector brings field wiring straight to the module without a terminal block. The IP66/67 rating means it can live directly on the machine, not just in a cabinet. PROFIBUS DP at 12 Mbit/s keeps data rate enough for most high-speed sensor applications.
It's a common part in the ET 200X lineup, so sourcing it is straightforward.