… bells, sirens, indicator panels, burglar or fire alarms), other than those of heading 85.12 or 85.30. …
Explanatory notes
… panels, burglar or fire alarms), other than those of heading 85.12 or 85.30. 8531.10 ‑ Burglar or fire alarms and … etc.) are not regarded as signalling apparatus. They are therefore not covered by this heading but are classified in their own appropriate headings ( headings 83.10 , 94.05 , etc.). The heading …