The kit has terminals, yes. Look at this
P25A13D-R1B: MEAN WELL: Power Supplies & Wall Adapters It's a multi-output PS, but not one that will work for you. But this is the kind of style I'm suggesting that you make. At your device you would have a socket. DIN sockets will work and they are used on these kind of adapters.
The other connectors (Circular Polarized Connectors) also work, but are large. They connect and disconnect easily though. There is a smaller connecter that I have used which is easy to disconnect/reconnect.
When you think in terms of building an adapter, you have to consider other things.
1. How can I adjust the adapter. Do I need to purchase a voltmeter? Harbor Freight <$4.00 for cheap.
2.Case: plastic or metal - how do I drill/cut it?
3. Feet. Screw or rubber. You don't want to scratch the floor)
4. Ventilaton?
5. Grommets/strain reliefs to protect exiting wire or should I use connectors?
6. SHould I use a detachable line cord. I say yes. Should I solder or use fast on terminals?
7. Line fuse. Internal or External? Do I own a "D" punch? Do I need one?
8. Grounded or ungrounded case/line cord. Probably ungrounded. Grounded requires fastening the ground to the case if metal
9. Standoffs. The PS must be mounted off the case?
10. Do I use the feet to allow me to not countersink the screws for the standoffs. Will the thicknessof the case support the use of countersunk screws?
11. Internal size of the case required to support power switch,indicator and fuse?
12. Power on indicator? Low or line voltage? Built into switch?
13. Wire needed? Colors? Gauge? Type?
Do you get the idea?