6ES7221-1EF22-0XA0 Siemens SIMATIC S7-200 Digital Input EM 221 Original Brand New

6ES7221-1EF22-0XA0

Siemens SIMATIC S7-200, digital input EM 221, isolated 8 DI, 120/230 V AC

Overview

Siemens SIMATIC S7-200 Digital Input EM 221 is an expansion module designed to extend the digital input capacity of S7-200 series programmable logic controllers (PLCs). It is particularly useful in applications where the number of digital input signals exceeds the onboard capacity of the base CPU. Available in various configurations (such as 8 or 16 digital inputs), the EM 221 module operates on 24 V DC and supports sinking or sourcing input types, making it compatible with a wide range of industrial sensors and switches.

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