The Combined Nomenclature (CN), v1:2026
8531 80 70: Electric sound or visual signalling apparatus (excl. indicator panels with LCDs or LEDs, burglar or fire alarms and similar apparatus, apparatus
https://www.dst.dk/en/Statistik/dokumentation/nomenklaturer/kn?id=42047d9e-9ea6-4f67-8490-e678557d3492