Siemens 6ES7421-1BL01-0AA0 6ES74211BL010AA0 PLC digital input 24 V DC
SIMATIC S7-400, digital output SM 422, isolated 16 DO 120/230 V AC, 2 A
SIMATIC S7-400, digital output SM 422, isolated 16 DO 120/230 V AC, 2 A
SM422, 16DO, AC120/230V, 2A
SIMATIC S7-400, digital output SM 422, isolated 16 DO 120/230 V AC, 2 A
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