Links Elysium Estate storage to the Safehouse containers. Provides access to almost everything: weapons, armor, books, notes, journals, all supplies, misc items, keys, scrolls, spell books, display prep station, drop-off chest, sell pile, sales income box (here it’s a sack), dishes, sorting container.
Make sure you have nothing stored in the EE containers before installation, all activators inside and outside will lead to new locations.