Supply Siemens PLC module 6ES7421-5EH00-0AA S7-400 expansion module SM421
SIMATIC S7-400, DIGITAL INPUT SM 421, OPTIC. ISOLATED, 16 DI, 120 V AC, WITH 1 COMMON POINT
Introduction
SIMATIC S7-400, DIGITAL INPUT SM 421, OPTIC. ISOLATED, 16 DI, 120 V AC, WITH 1 COMMON POINT
