Fire Alarm Horn Driver Board
Digital signal processor board amplifying coded tones (ANSI S3.41) for fire alarm horns in high-rise buildings. HTS 8531.90.90.01 part for sound signaling fire alarms. Temporal-3 pattern capable.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If complete sound/visual fire systems
Assembled fire alarm apparatus including horns classify separately.
If record player/tape amp parts
Audio amps resembling consumer electronics shift headings.
If other electrical with digital processing
DSP-heavy boards may be other electrical apparatus.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• NFPA 72 certification and temporal pattern test reports essential for entry
• dBA output curves must match fire code specs (e.g
• 90dBA @10ft)
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