One cool function of these function generators is how easy it is to switch from what input voltage to use. Moving to another country? Don't want to buy a power converter? Just open it up and change what prong the cable is connected to! Easy

They even have the appropriate fuse footprints for easy changing of fuses for different countries. The reason you see the "star" footprint to the right of the fuse is to accommodate the longer fuses, which I believe are for 240v, but I am not sure. I do know for sure that it is meant for longer fuses though.