Some key features and specifications of the 1769-CRL1 module may include:

Modbus Support: The module supports the Modbus RTU (Remote Terminal Unit) protocol, allowing communication over serial interfaces.

Communication Ports: It typically provides one or two serial ports (RS-232 and/or RS-485) to connect with Modbus devices.

Baud Rate: The module supports various baud rates, allowing flexibility in communication speed.

CompactLogix Compatibility: It is designed to be used specifically with Allen-Bradley CompactLogix controllers, providing seamless integration into the control system.

Compact Form Factor: The module is part of the Compact I/O family, designed to fit into a compact chassis, saving space in industrial control panels.

Diagnostic LEDs: The 1769-CRL1 module is likely to have diagnostic LEDs that indicate the status of power, communication, and module health, aiding in troubleshooting and monitoring.