Elevator Modes

In a smoky dark lobby a firefighter turns a red key in an elevator panel with a fire-hat icon, while the ErrorZap host peeks at a small handheld service tool with a green text screen and says SECRET MENUS.

Secret Menus: Modes, Keys, and Tech Tools

An elevator’s software is mostly a state machine of special modes: fire recall, firefighter control, inspection, earthquake. Plus the keys and tools that unlock them.