Manual switches can only be "thrown" (changing the direction of the rail) by flipping a lever on the switch by hand. Manual Code 83 Snap Switches can be easily converted to remote control with #584 Lefthand and #585 Righthand switch machines. All HO Code 83 Snap-Switches are designed for above or undertable switch machine. Under-table switch machine shown on pages 33-34. Plastic frog (cannot be powered) Cut-outs for rail joiners