Here's a picture of mine:
These are similar to the Decmate II, but smaller, and less expandable.
On the other hand, it is an excellent little machine, running a slightly kludged
version of OS/8. So far, it has been one of my most dependably working PDP-8's.
It also runs the WPS software, but I never really use that stuff.
DEC also made a Decmate III+, with hard disk, but I don't have any of those.
I have a Decmate III. These were also known as the PC238.
My Decmate III.