Hello! How many quantities of the product model SIMATIC S7-1200 G2: Fail-safe, compact CPU 1212FC DC/DC/RLY; Power supply: DC 20.4-28.8V DC; Onboard I/O: 8x DI 24V DC; 6 DO relay 2A; Memory: Program 200 KB, Data: 500 KB, Retained after power loss: 20 KB do you need?