Annunciator/əˈnʌnsieɪtər/ Definition 1 of 3Pro Tip 1/3Technical Alerts Used in technical environments to signal equipment issues or safety warnings. The boiler room's annunciator beeped, indicating high pressure. Pro Tip 2/3Industrial Context Common in industrial settings for system monitoring and efficient response. An annunciator alerted workers to the conveyor belt malfunction. Pro Tip 3/3Visual Indicators May also consist of flashing lights or changing displays, not just sounds. A red light on the annunciator panel warned of overheating.