Ionization Chamber Module for Smoke Detectors from Mexico
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.
Duty Rate — Mexico → United States
11%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify NRC licensing for radioactive components and include exemption certificates in documentation
• Label shipments clearly as 'radioactive material' per DOT/IATA hazardous goods rules to avoid delays
• Confirm compatibility with US detector standards (UL 268) to prevent CBP reclassification