Hello - I have been trying to track down this connector someone gave me years ago. The diameter of the 4 prongs together is approx. 0.085". There are a few threads that the plastic cover uses to tighten up.
I use them for testing with proximitors. They have test ports (circled in thumbnail) so the permanent wiring doesn’t need to be removed. The leaves on the mini plugs tend to break off when removing them and the body is much wider than the tip so they knock together and cause my connect to drop out.
Ah ok. That unit doesn’t look like it has banana sockets.
Did your original wire and plug come with it from new?.
I would think somebody on here can tell you what connectors/jacks your unit requires.
Martin - the levers are for releasing the permanent wires. The test ports have a tension piece near the bottom that holds the pin in place but nothing locks it in.
I’m going to order a few of the piece Kiwi shared. That looks promising!
Good idea, they’re not expensive.
You could always add your own connector type if you don’t mind opening the unit and changing them? Or hardwire to inside and have external connections?. Just another idea.