I am attaching a picture of my panel. Each panel is the area controlled by a TIU channel (I actually have 2 areas on one of the panels). Atop the panel are transformers, circuit breakers for each channel, and a small panel with buttons for uncoupling tracks. TIUs, WIUs, and AIUs are out of the way.
Also on top is special control box for my rolling gantry crane (28-gauge wire used, with relays) and spare, charged remote batteries