There are several switch suppliers that can help you out.

You have special keys (switches) that are designed for this purpose.

Ask around and you'll find what you'll need.

This problem is mostly solved by using two different switch aside each other. With two different mechanical specs triggered by the same push-handle.

This is very cheap and works ALWAYS.

An other aproach :

us a potmeter with a mechanical obstruction. So you can measure the absolute position of the handle.

Or use a handle like in your car (gear box)

Z- approach.


Have fun with the machanics.....