Hi,
I'm no expert, but if you like that button and want to use it you can sometimes carefully take them apart and remove the little locking pin what makes it lock into place, I have done it before on some buttons, others are moulded and you can't open them, just carefully try to open it and see if you can find the pin if you are able to remove it, the button will work then as a momentary push to make switch, just check continuity then as already suggested by other members with a multi meter to find the right pins.
Regards,
Chris.