Regarding the Slater box, do the screws then come out the normal way (turn with a screwdriver)? I hope it's not a one-way thing....that could be problematic when it comes time to replace the device.... [Linked Image]

Also, can two cables go through one knockout like that? I'm thinking one cable should go through each hole so that tab can grip it properly right? Not used to dealing with plastic boxes, that's why I ask the silly question. [Linked Image]