SM 421 DI

SM 421 16DI 24–60VUC SIMATIC S7-400 6ES7421-7DH00-0AB0

SIMATIC S7-400, digital input SM 421, isolated 16 DI; UC 24 – 60 V, alarm, diagnostics

SM 421 16DI 120/230VUC SIMATIC S7-400 6ES7421-1FH20-0AA0

SIMATIC S7-400, digital input SM 421, isolated 16 DI; UC 120/230V Inputs according to IEC1131-2 Type 2

SM 421 32DI 120V DC/AC SIMATIC S7-400 6ES7421-1EL00-0AA0

SIMATIC S7-400, digital input SM 421, isolated 32 DI; 120 V DC/AC

SM 421 32DI 24VDC SIMATIC S7-400 SIEMENS 6ES7421-1BL01-0AA0

SIMATIC S7-400, digital input SM 421, isolated 32 DI; 24 V DC