First Alert CO400B Carbon Monoxide Alarm from Canada
Battery-operated electrochemical carbon monoxide detector that sounds an alarm for hazardous gas detection, similar to fire alarms. Under HTS 8531.10.00 as similar apparatus for safety signaling.
Duty Rate — Canada → United States
11.3%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• UL 2034 certification mandatory for CO detectors
• Include sensor life expectancy (typically 5-7 years) on labeling
• Test electrochemical sensor accuracy at various CO levels