Signalling apparatus; electric sound or visual (e.g. bells, sirens, indicator panels, burglar or fire alarms), excluding those of heading no. 8512 or 8530

Signalling apparatus; electric, sound or visual, burglar or fire alarms and similar, other than those of heading no. 8512 or 8530

Signalling apparatus; electric, sound or visual, indicator panels incorporating liquid crystal devices (LCD) or light-emitting diodes (LED), excluding those of heading no. 8512 or 8530

Signalling apparatus; electric, sound or visual, apparatus n.e.c. in heading no. 8531, excluding those of heading no. 8512 or 8530

Signalling apparatus; parts of the electric, sound or visual apparatus of heading no. 8531