… sound or visual signalling apparatus (for example, bells, sirens, indicator panels, burglar or fire alarms), other than those of heading 85.12 or 85.30. …
Explanatory notes
… (e.g., lamps, lanterns, illuminated panels, etc.) are not regarded as signalling apparatus. They are therefore not … horns, sirens, etc . The sound is produced by a vibrating reed, by a rotating disc set in motion electrically or … personnel, indicating where a certain person or service is required, indicating whether a room is free or not. They …