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Ionization Smoke Detector Sound Chamber Assembly from China

Acoustic chamber optimized for 85dB alarm tone in ionization-type detectors. Classified HTS 9022.90.70.00 as integral part amplifying radiation detection alerts. Frequency-matched to human hearing response curve.

Duty Rate — China → United States

13.5%

Rate breakdown

9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China

Import Tips

Certify to UL 464 fire alarm appliance standards

Measure SPL at 10ft per ANSI S1.2 for documentation

Specify ionization model compatibility exclusively