Siemens 6ES7331-7TB00-0AB0 SIMATIC S7-300 Digital Input Module

The Siemens 6ES7331-7TB00-0AB0 is a SIMATIC S7-300 series digital input signal module designed to connect binary field signals (e.g., pushbuttons, limit switches, sensors) to a PLC. The module mounts into the S7-300 rack/backplane and provides digital input channels for the control system to detect on/off events. Suitable for industrial automation applications, maintenance and replacement in S7-300 installations.