Which component provides the interface between elevator operational commands and electrical signals?

The relay serves as a crucial component in the elevator system that translates operational commands into electrical signals. When an elevator command is issued from a control panel—such as a call to send the elevator to a specific floor—the relay takes this input and activates the appropriate electrical circuits necessary for executing that command.

By doing so, the relay ensures that the operational commands are effectively communicated to other components of the elevator system, such as motors or actuators, which then respond to these signals to perform the desired actions, such as moving the elevator car. This process is essential because relays can isolate and control high-voltage circuits while being activated by low-voltage signals, making them integral for safe and reliable elevator operation.

Understanding this functionality highlights the relay's role as the essential link between user input and the subsequent electrical actions necessary for the elevator's operation.