Manufacturer: SIEMENS Model: 6ES7321-1BL00-0 AA0 Module Type: Digital Input Module Number of Channels: 16 Voltage Class: 24VDC Response Time: Less than 1ms Protection Class: IP20 Operating Temperature Range: -25 ° C to + 60 ° C Mounting Style: Rail Mounting Weight: Approx. 0.2kg Dimensions: 5.157x 5.906x2.008 cm This SIEMENS S7-300 series digital input module, designed for industrial automation environments, has 16 channels of digital signal input capability and can effectively handle 24VDC voltage levels.Its 0.5 millisecond response time ensures fast and accurate data acquisition. By using photoelectric quarantine technology, the anti-interference ability and system stability are significantly improved. It is suitable for a wide range of industrial application scenarios, such as factory automation production lines, process control systems, etc. The module supports multiple mounting options for easy integration into existing control systems.In addition, it is temperature adaptable, providing stable operation over an operating temperature range of -25 ° C to + 60 ° C and maintaining performance over a wider range of storage temperatures. The compact design and light weight make it easy to install and maintain, while guaranteeing the efficient operation of the system.