Fire Alarm Horn Driver Board from Canada
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.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• NFPA 72 certification and temporal pattern test reports essential for entry
• dBA output curves must match fire code specs (e.g
• 90dBA @10ft)