The LEGO Technic 42009 Mobile Crane MK II features two switches so that multiple functions can be operated by a single motor. Of course, the downside is that you can't have multiple functions operate at the same time, but it's still a wonderful feature that is fully demonstrated in this set. An earlier post demonstrated a switch operating two functions. This is a good post to start with if you are not familiar with the general principle. As promised, now we can see how 4 fun...