For siemens sm 321 Model Number : 6ES7 321-1EL00-0AA0 Product Name : Siemens PLC Input current : 16mA Power loss : 4W SIMATIC S7-300, Digital input SM 321, isolated, 32 DI, 120 V AC Hot Tags: for siemens sm 321, suppliers, wholesale, cheap, price, low price, in stock
