First Alert CO400B Carbon Monoxide Alarm from Mexico
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.
Duty Rate — Mexico → United States
11.3%
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
• UL 2034 certification essential; specify sensor life (5-7 years); avoid mixing with smoke-only declarations