Siemens 6ES7321-7TH00-0AB0 Simatic S7/PCS7 Digital Input Sm 321, 16 Di; 24 V DC 1 X 40-Pole, Diagnostics-Capable, For Contacts (wired/ Not Wired), Namur Encoder, 3/4-Wire Be

Siemens part number 6ES7321-7TH00-0AB0. SIMATIC S7/PCS7, SM 321 DIGITAL INPUT MODULE, 16 DI, 24V DC, CAPABLE OF DIAGNOSTICS, FOR CONTACTS (CONNECED/UNCONNECTED), NAMUR SENSOR, 3/4-WIRE-BERO, WITH FLUTTER MONITORING, PULSE LENGTHENING, WIRE BREAK DETECTION, IM 153-2 INTERFACE MODULE REQUIRED