Model U-2000.
Does NOT need isolation transformer.
A special power cord "dongle" adapter cable (3 pin U2000 monitor power to 2 pin cabinet power) Wells-Gardner part # 038A8059-000 (sells for $10) allows this monitor to plug in power to the same connector the Hantarex did in your cabinet.
The video/sync input cable assembly can be bought from Bob Roberts.
If you want a standard AC power cord for this monitor (allowing you to plug it into any AC outlet) it's part # 038A7927-000