Manufacturer: SIEMENS Model: 6ES7521-1BL00-0AB0 Product Type: Digital Input Module Number of Channels: 32 Input Voltage: 24VDC Input Delay: 3.2 ms typ Input Type: IEC61131 Standard Package Size: 15.10x20.30x3.50cm Net Weight: 0.355 kg This SIEMENS S7-1500 series digital input module is designed for industrial automation systems that require efficient data acquisition and processing.With 32 24 V DC input channels, it is capable of meeting the needs of most industrial application scenarios. This module uses advanced design concepts to ensure high precision and rapid response capabilities, thereby improving the operational efficiency of the entire system. The module features an easy-to-install front connector design that makes it easy for users to perform field maintenance and upgrades. In addition, its compact size makes it easy to integrate into existing control systems without additional space modifications.In practical applications, this module can be used to monitor the status of sensors and safety doors on the production line, and is widely used in factory automation, process control and other fields. Through the seamless docking with the SIEMENS S7-1500 series PLC, it can achieve efficient signal acquisition and processing, and improve production efficiency and safety. In order to ensure long-term stable operation, this module is also equipped with a diagnostic function, which can monitor the input status in real time, find and solve problems in time, and reduce downtime.