Here are some key features of the 1769-IM12 input module:

Input Channels: The module has 12 input channels that accept 24V DC signals. Each channel can be used to monitor the status of a discrete device such as a pushbutton, limit switch, or sensor.

Wiring: The module supports sinking/sourcing input wiring. You can connect the devices to the module using either a common positive (+V) or common negative (-V) configuration, depending on your application requirements.

Diagnostic LEDs: Each input channel has an LED indicator that provides status information for quick troubleshooting. The LEDs help indicate whether the module is properly powered and if the connected devices are active or not.

Backplane Communication: The 1769-IM12 module communicates with the CompactLogix controller over the backplane. This means you don't need additional wiring for communication between the module and the controller. The module has an integrated communication port that connects to the backplane.

Compatibility: The 1769-IM12 input module is compatible with other modules in the Compact I/O family. It can be installed in the I/O chassis alongside other modules, such as output modules, analog modules, communication modules, etc., allowing you to expand your system as needed.