Ionization Smoke Detector Sound Chamber Assembly

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.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China1%+10.0%11%
🇲🇽Mexico1%+10.0%11%
🇨🇦Canada1%+10.0%11%
🇩🇪Germany1%+10.0%11%
🇯🇵Japan1%+10.0%11%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

8518.90Lower: 10% vs 11%

If microphone/speaker parts

Microphone/speaker components principally for sound apparatus in 8518.

3926.90.99Higher: 22.8% vs 11%

If plastic acoustic housings

Plastic articles solely for sound reflection classified by material.

8531.90.30.00Higher: 35% vs 11%

If sounder modules for general alarms

Alarm sounders not detector-specific fall under 8531 parts.

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

Certify to UL 464 fire alarm appliance standards

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

Specify ionization model compatibility exclusively

Related Products under HTS 9022.90.70.00

Detector Head Connector Harness for Ionization Units

Multi-conductor harness linking ionization chamber to main PCB in modular smoke detectors. HTS 9022.90.70.00 for signal transmission from radiation sensor in smoke apparatus. Strain-relief design for 20-year service.

Tamper-Resistant Cover for Ionization Smoke Sensors

Locking dust cover specific to ionization chamber exposure in commercial detectors. Provides radiation shielding when not in service. HTS 9022.90.70.00 accessory protecting ionizing apparatus components.

Ionization Chamber Module for Smoke Detectors

This is the core detection component in ionization-type smoke detectors that uses a small amount of radioactive material to ionize air between two electrodes, detecting smoke particles by changes in current flow. It falls under HTS 9022.90.70.00 as a part specifically for ionization smoke detectors, which rely on ionizing radiation for operation. These modules are precision-engineered for residential and commercial fire safety systems.

Americium-241 Source Assembly for Ionization Smoke Alarms

A sealed radioactive source containing Americium-241, the key ionizing element in smoke detectors that emits alpha particles to create ionizable air. Classified under HTS 9022.90.70.00 as an essential part of ionization-type smoke detectors using ionizing radiation. These assemblies are rigorously tested for safety and longevity in fire detection devices.

Ionization Smoke Detector Printed Circuit Board

Custom PCB designed exclusively for ionization smoke detectors, integrating amplification circuits for the ionization chamber signal and low-power processing. Falls under HTS 9022.90.70.00 as a dedicated part for apparatus using ionizing radiation in smoke detection. Essential for converting radiation-induced current changes into audible alarms.

Replacement Ionization Chamber for Residential Smoke Alarms

Factory replacement ionization chamber for popular household smoke detectors like First Alert models, containing the radioactive foil and electrodes. HTS 9022.90.70.00 applies as a part of ionizing radiation-based smoke detection apparatus. Designed for easy snap-in installation to extend detector life.