The Siemens SIMATIC S7 Series Digital Input Module, part number 6ES7221-1BF22-0XA0, is a high-performance component designed for the S7-22X CPU. This module features 8 digital inputs, operating at 24V DC, and offers both sink and source input capabilities. With a maximum input current from the backplane bus of 5V DC at 30mA, it ensures efficient operation. The module is designed to handle a typical power loss of 2W, ensuring durability and longevity. It supports m/p-reading and has an input delay of 4.5ms at the rated value of input voltage for standard inputs. The module is compact, with dimensions of 46mm in width, 80mm in height, and 62mm in depth, making it suitable for installations where space is a premium. The Siemens SIMATIC S7 Series Digital Input Module is a reliable and efficient solution for your automation needs.