The Siemens SIMATIC S7-1200 SM 1221 (6ES7221-1BF32-0XB0) is a digital input signal module adding 8 digital inputs (24 V DC, sink/source) to any S7-1200 CPU. It operates over 20.4-28.8 V DC with only 1.5 W typical power loss, and connects via the required front connector in the compact 45 mm wide S7-1200 form factor. It is the economical way to add discrete sensor inputs for packaging, material handling and general machine control applications. Brand new module in original packaging.
The Siemens SIMATIC S7-1200 SM 1221 (6ES7221-1BF32-0XB0) is a digital input signal module adding 8 digital inputs (24 V DC, sink/source) to any S7-1200 CPU. It operates over 20.4-28.8 V DC with only 1.5 W typical power loss, and connects via the required front connector in the compact 45 mm wide S7-1200 form factor. It is the economical way to add discrete sensor inputs for packaging, material handling and general machine control applications. Brand new module in original packaging.
