SIMATIC S7-400 SM 421, DI 32xUC 120 V

SIMATIC S7-400 SM 421, DI 32xUC 120 V

SKU: 6ES7421-1EL00-0AA0 Categories: ,

$1,540.48 – $1,711.64

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SM 421 digital input module — 32 isolated channels, 120V AC/DC universal current input. [VERIFIED via Siemens official datasheet]

Technical Specifications

Module Type Digital Input
Channels 32, isolated
Input Voltage 120V, UC (universal current = AC or DC)
Cable Length Up to 600m unshielded / 1000m shielded

Typical Applications

Used to sense 120V AC or DC field signals directly without an external signal converter, suited for installations where field devices are wired at 120V rather than the more common 24V DC level.

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