Key features and specifications of the 1747-L543 Module include:

Processor Speed: The module operates at a processor speed of 5 MHz.

Memory Capacity: It has a total memory capacity of 6K words for user programs and 8K words for data.

I/O Capacity: The module supports up to 4096 input or output points.

Communication Ports: It has a built-in DH-485 port for communication with other devices.

Programming Software: The module is programmed using the Rockwell Software RSLogix 500 programming environment.