They will not mount to a standard door.
The one on the left is a Mars Cashflow (
www.meiglobal.com), I would guess the other 2 are similar products as well and no, they will not mount on a normal over under coin door.
It also doesn't say what country they are programmed for. All of this said, if you goto the mars website, select the country you are in and then select service centers you should be able to get the 126 working. I don't know about the other 2.
Almost forgot. These are Electrical Coin Acceptors, they do not have a standard "micro switch" for the coin to hit on the way out. They can be set up to "pulse" a line when a coin is accepted and you could connect that to a input device. It could work but it would be beyond overkill for a home arcade machine.