Ionization Smoke Detector Sound Chamber Assembly from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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