Sealed Electrode Assembly for Ion Smoke Detectors
Corrosion-resistant electrode pair hermetically sealed for ionization chambers in battery-powered smoke detectors. HTS 9022.90.70.00 covers this critical part enabling current flow detection from alpha particle ionization. 10-year service life design.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If insulated wire assemblies
Electrical conductors separated from detector function go to 8544.
If copper-based electrical contacts
Base metal articles for electrical use classified in Section XV.
If parts for liquid crystal devices or lasers
Other optical/precision instrument parts in 9013 if misapplied.
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Import Tips & Compliance
• Certify gold-plated contacts meet ASTM B488 for long-term reliability
• Declare hermetic seal test results (MIL-STD-883) for defense-related imports
• Avoid over-declaring value of precious metal content to prevent assay
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.