This unit is made in a Allen-Bradley SLC500 Training Case.

It includes:

1 CPU 315 2DP (6ES7 315-2AG10-0AB0)

1 Digital Input/Output 16 pt Combination module ( 6ES7 323-1BL00-0AB0)

1 digital Relay Output 120VAC/240VAC (6ES7 322-1HH01-0AB0)

1 Analog Input (6ES7 331-7KF02-0AB0)

Excellent unit for learning Siemens PLC with free programming software Simatic Manger V5.7 (good for win 10, Win11) and programming cable. I installed a potentiometer (0-10V) to one input channel you can learn programming analog input. 

I also use a 24VDC/10VDC converter to make 0-10VDC