Siemens Simatic ET200S Digital Input Module 6ES7 131-4BF00-0AA0  662-3577 

New , Sealed

Siemens - 6ES7131-4BF00-0AA0 DIGITAL INPUT MODULE, 8X 24 V DC, TYPE 1 IEC 61131, 2-WIRE SENSOR, NO DIAGNOSTICS, FIXED DELAY 2–4.5 MS, FOR ET 200S, 15 X 81 X 52 MM