Product Quantity Subtotal Siemens SIMATIC S7-400 Backup Battery, 3.6V Lithium, 2.3Ah Capacity, for PS 405/407 Power Supplies (4A/10A/20A) Siemens SIMATIC S7-400 Backup Battery, 3.6V Lithium, 2.3Ah Capacity, for PS 405/407 Power Supplies (4A/10A/20A) quantity Siemens SIMATIC S7-300 SM 323 Digital I/O Module, 16 Inputs (24V DC Sink/Source) and 16 Outputs (0.5A Transistor), Isolated Siemens SIMATIC S7-300 SM 323 Digital I/O Module, 16 Inputs (24V DC Sink/Source) and 16 Outputs (0.5A Transistor), Isolated quantity Coupon: Apply coupon Update cart Cart totals Subtotal Total PROCEED TO SEND REQUEST