A person permitted to attend a meeting or event, who can participate in discussions but does not have the authority to vote or make formal proposals.
An individual present in a capacity that allows for observation and commentary, but lacks any decision-making power or rights to influence outcomes.
Someone who is allowed to attend a meeting as a special guest, able to express opinions but without the qualifications to engage in voting or formal decision-making processes.
An apparatus that produces a low, dull sound by vibrating a metal plate using electromagnetism, commonly employed for notifications and alerts.
A device that generates sound by vibrating a metal piece with an electromagnet, often used in alarms and doorbells to signal an event or draw attention.
A sound-producing mechanism utilizing electromagnetic forces to create vibrations in a metal component, typically used for alerting purposes or as a calling device.
A signaling device that emits a distinctive sound by causing a metal part to oscillate through electromagnetic induction, frequently used to indicate emergencies or to summon assistance.