







SIMATIC S7-300, Digital Input SM 321 6ES7321-1BH50-4AA1
SIMATIC S7-300, digital input SM 321, potential isolation 16 digital inputs, 24V DC, M read, 1 20-pin

Introduction









SIMATIC S7-300, digital input SM 321, potential isolation 16 digital inputs, 24V DC, M read, 1 20-pin

