Article Number (Market Facing Number)：6ES73211FH000AA0 | 6ES73211FH000AA0
Product Description：SIMATIC S7-300, DIGITAL INPUT SM 321, OPTICALLY ISOLATED 16 DI, 120/230V AC, 1 X 20 PIN
Product family：SM 321 digital input modules
Product Lifecycle (PLM)：PM400:Phase Out Started