First Alert CO400B Carbon Monoxide Alarm
Battery-operated electrochemical carbon monoxide detector that sounds visual/audible alarms for fire safety systems. Similar apparatus under HTS 8531.10.0045 for gas detection tied to fire alarms.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If sold as gas/smoke analysis instrument
Laboratory or industrial gas detectors classify under Chapter 90 measuring instruments.
If hardwired residential installation
Hardwired CO/fire combination alarms use the 0040 statistical suffix.
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Import Tips & Compliance
• UL 2034 certification essential; specify sensor life (5-7 years); avoid mixing with smoke-only declarations
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