Siemens 6ES7321-1BH02-0AA0 SIMATIC S7-300 Series Series Digital Input Expansion Module for Use with SIMATIC S7-300 Series, Digital, 24 V

This expansion module from Siemens integrates with SIMATIC S7-300 PLCs (programmable logic controllers) to scale your system's capabilities. With 16 input channels, it enables greater control of your automated operations. It also includes advanced features such as galvanic isolation between channels for improved safety and a backplane bus to provide greater versatility. Use this expansion module to relieve your CPU (central processing unit) of work-intensive tasks such as counting and positioning, and to enhance your system's speed and efficiency. You'll commonly find modules like this one used in the robotics and automotive industries, as well as with industrial automation applications.
• Compact dimensions of 125 (height) x 40 (width) x 120mm (depth) for mounting in tight spaces
• Wide operating temperature range of -25°C to +60°C for use in tough industrial environments
• Green LED (light-emitting diode) status indicator makes it simple to see if the device is functioning properly

What connection method does this module use?

This unit requires a front 20-pin connector to ensure a strong, secure connection.